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Preface
Thanks for your using JAC trucks!
Before your using JAC trucks, please read this operating specification carefully and operate the trucks according to the
specification to bring JAC trucks' excellent performance into full play and keep the trucks in a good running state in a
long time!
JAC trucks are developed and produced jointly by Anhui Province Automobile Research Institute and Anhui Jianghuai
Automobile Co., LTD. As well as the road conditions are taken to fully condition, the domestic and overseas modern de鄄
sign and producing technique of body and chassis are absorbed and adopted to let JAC trucks bear good smoothness
and possibility, safe and reliable brake, easy and light control, convenient usage and maintenance.
As a result of continuous progress in the technique, JAC trucks are also innovated and improved. All the diagrams and
data in the specification are based on the latest material when compiling. We would not inform you after making some
modification on it. Please forgive us for it.
For the reason of hastiness, there may be some defect in it, and we are honored to receive your suggestion and advice.
The technology consultation telephone number: 0551-2296374
The service consultation telephone number: 0551-2296361
Anhui Jianghuai Automobile Co.
ANHUI JIANGHUAI AUTOMOBILE CO., LTD.
May. 2008
Contents
Notice! Please read these following items carefully before using JAC trucks!
玉援As regards JAC trucks, please pay attention to these following items:
1.It is forbidden to make refitting and adding equipment without our permission, especially on the electric appliance,
brake, steering and so on that will affect the safety system of the products.
JAC will not take upon herself the loss owing to your refitting and adding equipment without our permission!
2.when using JAC products, please make timely maintenance and service according to the service manual to bring the
good performance of your loving truck into full play.
3.Please be sure to go to special repair shop of JAC for service if finding problems in using; please use genuine parts of
JAC if needing to change parts. JAC will not take upon herself the loss owing to your not using genuine parts.
4.Any consumer that uses JAC complete vehicle or chassis is forbidden to change its product identification and name鄄
plate, or the consumer will be responsible for it.
域援As regards the special purpose chassis of JAC, please pay attention to the following items:
1. It is forbidden to lengthen or widen the frame of JAC without JAC's permission, or you will take upon yourself the loss
for it.
2.As regards the refitting on JAC special purpose chassis, all the refitting companies should not make the refitted mod鄄
els be contradict with the traffic regulations and the relevant rules of the nation, or JAC will not be responsible for it.
玉尧 Use of vehicle
1
域尧Engine
21
芋尧Chassis
29
IV尧Electrical equipment
55
吁尧Vehicle service and maintenance
61
遇尧Trouble shooting
65
喻尧Automotive model table of trucks
85
峪尧Appendix
89
Main files alone with the vehicle
94
玉. Use of vehicle
(玉). Use of instruments and apparatuses in the cab
(域). Use of components in the cab
(芋). Start and running of vehicle
1
HFC1048
series trucks
( 玉 ). Use of instruments
and apparatuses in the cab
1. Integrated switch and instru鄄
ment cluster
Integrated
switch
(figure
below)
which is composed of steering shaft
lock
seat尧ignition start lock and
combination switch lies underneath
the steering wheel.
combination
switch
ignition switch
schematic diagram of integrated switch
2
1) Ignition switch
tion of spring. The schematic dia鄄
Combination switch is under the
tion of headlight. Keep on the turning
the control handle is in the middle
Ignition switch is on the right side of
gram of ignition switch is as follows.
control of the multifunction handle,
of the left control handle clockwise
position, then there has no indication
integrated switch. It has four func鄄
which lies in the lower left and inferi鄄
by 30毅 , the front headlight尧the rear
of turning.
tions: LOCK尧ACC尧ON尧START. When
or place of the steering wheel. It can
small light and the instrument light
虞 Dimmer of headlight: Lift the left
the key is on the 'LOCK' position,
control small light尧headlight尧head鄄
can light.
control handle upwards gently and
the ignition switch has been connect鄄
light dimmer and turning to the left or
榆 The
symbol is the indica鄄
do the 'uplift -looseness' motion, it
ed to the power source and the
the right by two different movement
tion of steering. Forward and back鄄
can control the dimmer function of
lockup of steering gear has been
modes. The symbol and function of
ward motion of the control handle
the headlight. Uplift the handle once,
disengaged. Turn the key to 'ACC'
the combination switch is as follows:
can operate the left and right turning
high beam headlamp lights; loose
position clockwise, the circuit of ac鄄
淤 The OFF symbol indicates that
lamp and the turn light indicator in
the handle, it goes out. Repeating
cessories like radio and tape player
schematic diagram of ignition switch
small light and headlight do not light.
the instrument panel. Push the con鄄
the above action can control the
can be connected. Turn to the 'ON'
2) Combination switch ( left control
(But at this time the high beam can
trol handle forward in the horizontal
work status of the high beam head鄄
position, and the instrument circuit is
handle)
light if you put up the handle.)
direction, the right turning lamp lights
lamp to obtain the purpose of dim鄄
connected. If keep on turning until to
于 The
symbol is the indica鄄
and there has the indication of turn鄄
mer function
the 'START' position, the engine can
tion of small light. Turn the control
ing right in the instrument panel. On
passing in night.
be started. You should unlash the
handle clockwise by 30毅 ,and the
the other hand, pull the control han鄄
handle of the key immediately after
front尧rear small lights and the instru鄄
dle backward, the left turning lamp
the engine started. And the key can
ment light can light.
lights and there has the indication of
盂 The
turning left in the instrument panel. If
return to the 'ON' position by the ac鄄
left control handle
symbol is the indica鄄
when
overtaking
or
3
HFC1048
series trucks
3)Combination switch
(right control
the wiper. Turning the control handle
braking works. If the accelerator
pressed, the front尧 rear尧 left尧 right
clockwise in the horizontal direction
pedal or
was
turning lamp flash at the same time
can control the wiper. Turn the con鄄
stepped, the exhaust assistant brak鄄
and send out emergency signal for
trol handle clockwise by 12毅 to the
ing should cancelled
automatically
alarm indication. Press the button a鄄
'LO' position, then the wiper works
and the indicator lamp in the instru鄄
gain, reset signal of the switch dis鄄
with low speed. Keep the turning
ment panel went out.
connected.
clockwise for another 12毅 , the wiper
4) Other electric appliance switch (
盂 The
can work with high speed. When the
seen in the left and below figure)
below figure) is indication of the fog
control handle is on the original posi鄄
Other electric appliance switches
lamp. If pressed, the fog lamp lights.
the scrubber. When the washer con鄄
tion, it can be disconnected or re鄄
mainly include horn button, danger
Press again, the switch resets.
trol button on the top of the control
turned automatically.
warning switch, fog lamp switch,
榆 Ceiling light signal indicates that
handle pressed, the cleaning mixture
盂 The
courtesy lamp switch and ceiling
the door of the vehicle is shut closely
(using antifreeze fluid in winter) in the
exhaust throttle assistant braking. Lift
light switch.
or not. When there have one door
window washer which lies in the right
the right control handle upwards and
淤 The horn button is in the center of
opened or did not shut closely, the
doorframe and underneath instru鄄
do the 'uplift-looseness' motion. Up鄄
steering wheel, when the button is
ceiling lamp lights to remind driver.
ment panel can be spouted to the
lift the handle, then the switch can be
depressed it can hoot.
windshield glass through the spout
connected and the indicator lamp in
于 The
under the window.
the instrument panel lights. This
below figure) is indication of danger
于 The
shows that exhaust throttle assistant
warning switch. If the button is de鄄
handle)
right control handle
淤 The
4
symbol is indication of
symbol is indication of
symbol is indication of
the
clutch
pedal
symbol
( the right and
5) instrument cluster
other electric appliance switch
instrument cluster(air brake)
danger alarm and fog lamp switch
symbol ( the right and
instrument cluster(hydraulic brake)
5
HFC1048
series trucks
status of high beam or not. When the
oil pressure indicator lamp lights.
headlamp is on the high beam sta鄄
When oil pressure is higher than the
tus, the indicator lamp lights.
value, the oil pressure indicator lamp
盂 Fuel warning lamp(
goes out.
): fuel level
冤院
1尧turn left 2尧high beam 3尧turn right
4尧fuel alarm 5尧parking brake
6尧charging 7尧oil pressure alarm
8尧braking fault 9尧exhaust assistant
brake 10尧fog lamp 11尧small light
indicators
alarm, when fuel is in shortage, fuel
舆 Braking fault indicator lamp渊
alarm lamp lights.
when braking fluid is not enough, the
榆 Parking brake indicator lamp
indicator lamp lights.
渊
冤院when pull up the parking brake
余 Exhaust assistant brake indicator
Indicators (figure in the above page):
虞 Exhaust assistant brake indicator
braking operates,the indicator lamp
淤 Turn indicator lamp(
lamp渊
) when
handle,the indicator lamp lights.
冤院when exhaust assistant
lamp 渊
冤院when exhaust assistant
lights. When exhaust assistant brake
the turning control handle is on the
braking operates, the indicator lamp
is disconnected,the indicator lamp
left (right) turning position, left (right)
lights. When exhaust assistant brake
goes out.
turning indicator lamp flashes. If the
is disconnected, the indicator lamp
俞 Fog lamp indicator lamp渊
warning switch is pressed, the left
goes out.
when braking fluid is not enough, the
and right turning indicator lamps
愚 Oil pressure indicator lamp渊
flash at the same time.
冤院
冤院
indicator lamp lights.
冤院
(域). Use of components in
the cab
Cab
Brief description of the structure
The driver cab is forward control cab
with full metal enclosed construction.
Window
glass
adopts
panoramic
camber windshield. In order to im鄄
prove the comfort, side panel with
tress on the upside of the engine.
you like ,for example , can choose
Sealing of the door is double skin
the same way to sending wind.
construction. At the aspect of safety,
softening has done to the main parts,
which can appear knocking easily
with passengers.
The air condition system (choose
to pack)
1.Brief introduction
cab have been adopted. Therefore
The automobile air -conditioner and
the interior space of the cab can be
the automobile instrument panel is an
more commodious and comfortable.
integral body which have cold air
Effective measures have taken in re鄄
duce noise尧 heat insulation尧 sound
insulation and sealing. For instances,
indicates low - pressure warning of
逾 Small light indicator lamp渊
engine oil pressure. When oil pres鄄
When they work袁he indicator lamp
closed and strengthening rib is e鄄
indicates that the headlamp is in the
sure is lower than 0.08-0.1Mpa , the
lights.
quipped on the roof. There have
6
so the customer can choose what
larger upside width and raised -roof
)
于 High beam indicator lamp(
three asbestos heat insulating mat鄄
the section of roof forehead is en鄄
and warm air machine. It has many
useful functions , or example ,to
making cold air ,warm air and to re鄄
moving frost . The air -conditioner
system has four high and low steps ,
2.Operation
2.1 To operating the engine
2.2 To press the switch for the air conditioner , then operating the air
volume .The switch has four grades ,
from left to right ,so the air volume of
air -conditioner will be more and
more strong.
7
HFC1048
series trucks
2.3 To operating air -conditioner
3.Caution
tain the air -conditioner for normal
top of cab that you definite the top
step opening, can improve the con鄄
switches 5,then the compressor be鄄
3.1 You should be avoid the handle
worked.
cab is closed.
venience for passengers getting on
gins to work at this time .The whole
in the most cold position when using
3.6 If you want to use the air heater ,
(2) Turn on the switch to "IN" then
or off. The opening angle of the door
system will be colder.
t he air -conditioner in order to pre鄄
the temperature degree of engine
turn on the rotary knob to "OPEN" .
can be 30o尧 57o and 90o. The for鄄
2.4 Using the cold wind , please put
vent evaporate the machine from
should reach to 70 益s above .At 0益
mer two angles are partially open
the temperature adjusting handle 3 to
ii. Indoor airiness
frost.
s the automobile should not park in
(1) Clockwise the rotary knob to clos鄄
and the last angle is full open. On all
the COOL position .Using the warm
3.2 Do not park the cars under the
the cool environment, it should be
ing the ventilator louver.
the three positions, the door can be
wind ,you should put in the HOT po鄄
sun .
use antifreeze fluid, in order to pre鄄
(2) Turn to the switch to "out "which is
in stable condition.
the exhaust gear position.
sition .To changing the wind-position
3.3 To using air -conditioners, you
venting frost radiator and air heater.
,choose the handle 2 can make the
should be close windows and doors
3.7 If you do not know the preven鄄
cold (warm) breeze never lead with
of the cab.
tions about the air -conditioner , do
direction .If you want to using the
3.4 To cleaning the condenser , you
not switch it , the in order to prevent
warm wind ,you should be close
should be wash with the compressed
results in trouble.
switch of the air condition.
air or cold water ,do not wash it
The top of cab's ventilating device
2.5 To turning the natural wind con鄄
strictly with the hot water or steam.
which has two ways for it .One is ex鄄
version , then pressing the handle
3.5 The air-conditioner does not use
terior air with indoor ,another one is
1can make the natural wind from
in winter , however ,you should be
house airiness .
outside of the car.
revolve compressor once a
week
about five minutes .In order to main鄄
8
i. Leading exterior air
(1) Clockwise the rotary-knob on the
Door
1) The cab door, which have three-
outside door handle
lock button
9
HFC1048
series trucks
2) Outside door handle
Cab seat
Pull out the outside door handle, and
Cab seat can be classified as driver
to turnover is used by torsion power.
then the door can be opened. Insert
seat尧 assistant driver seat and rear
Lock up system is composed of
the starting switch key into the door
row seat. Driver back seat adopts up鄄
lock and turn, the door can be
1.chuck rod
right seat. The angle of backrest and
2.overturn rod
short pull rod ,long pull rod ,rear
locked.
the fore-and-aft position of seat can
3.safe locking hook
bracket of cab and so on .All of this
3) The door can be locked outside
be adjusted. The maximum ad鄄
without the key. First press down the
justable angle of the backrest is 56o.
lock button
(figure in the above
The maximum adjustable distance of
page) at the inner side of the door to
the seat is 160 mm. The seat adjust
left door of the cab and on the upper
the fixed position, then pull the out鄄
system is shown in the right figure.
flange of the wheel seriously before
side door handle outwards and at
When vehicle is in the progress of
tilting the cab. The notes are shown
the same time close the door.
maintenance, please clean the track
in the upper figure
4) Pull out the inside door handle,
assembly of the driver seat, recoat the
and the door can be opened. After
lithium base grease, and tighten all
closing the door, the door can be
locked if the lock button is pressed
down.
10
Cab tilt lock mechanism
cab'srear bracket and so on.The cab
right/left lock unit ,turnover lock unit ,
is to lock the cab too tightly.(as pic鄄
schematic diagram of
cab tilt locking device
ture)
Please read the tilting notes on the
Use and maintenance
support rod assembly
淤 When the vehicle is stopped on
Brief of the structure
In order to tilting the cab reliably and
the horizontal road, you should make
joint nuts again. If found that the cab
The cab has turnover functions , also
running the vehicle safely, please
sure that there has enough space
track slide seat has shaking or block
has turnover and lock up organiza鄄
pay attention to following contents.
around the cab before tilting. Or else,
because of distortion, it should be re鄄
tion . The turnover was composed of
the cab may be damaged while tilt鄄
paired or replaced with components.
torsion
渊1冤Cab tilting method and relative
notice
bar,
supporting
-axle,
attentive notices.
ing.
11
HFC1048
series trucks
于 Pull up the parking brake; push
lock it reliably with lock arm on the
it should be repaired or replaced im鄄
rod cannot work. Now the cab can
tube
the shifting lever into the neutral posi鄄
rear bracket. It is shown in the right
mediately.
be removed ( The torsion rod can not
out).
direction after dropped down. If nor鄄
tion to avoid the self -sliding of the
figure.
盂 If felt arduous when tilting up the
be pulled out).
b. After mount the cab with support
mally, then lock the cab.
vehicle.
舆 When lowering the cab down, first
cab or heavy when dropping down
Note: The above -mentioned work
axle tube and the left尧 right bracket
愚 If find invalidation of the torsion
盂 The cab door must be fastened
hold the tilting rod and disengage
the cab, the torsion rod is invalid. Re鄄
must be done by three persons at
together to the frame, put the '1' of
rod, when replacing, operates ac鄄
up. You should take all goods on the
the locking function of lock arm on
place the torsion rod.
least because two or three persons
hub splines on the torsion rod in
cording to 榆 虞.
instrument panel尧 seat and floor
the rear bracket, then lower the cab
榆 When repairing the chassis, be鄄
cannot push the cab forward after
alignment with the spline tooth which
away to avoid the damage of the
down slowly. After the safety lock
fore removing of the cab, disengage
the force of the torsion rod is disen鄄
is cut at the bottom on the other end
door and the front windshield.
locked, fasten the locking mecha鄄
the force of the torsion rod and op鄄
gaged.
of the torsion rod, cover the hub
(芋). Starting and running of
the vehicle
榆
nism.
erate with following steps.
虞 Before reverting the cab to the o鄄
splines on the torsion rod and insert
渊2冤Inspection and maintenance
a. Disengage the locking state, and
riginal position, return the force of the
the spline axle tube into the right
淤 Check periodically the rubber pad
tilt up the cab to the utmost position.
torsion rod and operate with follow鄄
bracket in the cab.
虞 After the locking function disen鄄
assemblies
to
b. Remove the shaft pin connected
ing steps:
c. Tilt the cab forwards until the bolt
gaged, hold the tilting rod with hand
strengthen the front尧rear support, if
the rear support rod and the base
a. Put the tooth part of the spline
hole on the torsion rod arm aimed at
and pull up the safety lock hook at
find damaged, it should be replaced
board support of the cab.
which is cut at the bottom on one
the screwed hole on the right bracket
the same time to avoid the sudden
instantly.
c. Push the cab forwards for some
end of the torsion rod in alignment
in the cab, screw the bolt and tighten
uplift of the cab.
于 Check periodically the locking sit鄄
angle until the bolt on the torsion rod
with '1' position on the support axle
it.
愚 Raise the cab slowly until it is tilt鄄
uation of the locking mechanism, if
arm can be loosened.
tube and the spline tube, and insert
d. Put the cab down slowly, and
ed to the maximum position, then
invalidation of locking function found,
d. After the bolt removed, the torsion
the torsion rod into the support axle
check whether the cab is on the
First disengaged
the locking
function of the cab locking mecha鄄
nism when tilting the cab.
12
which
are
used
( for the rod which is pulled
state of suspending at the horizontal
1. Starting of the vehicle
1冤Starting of the engine
When starting the engine, put the
shift bar on the neutral position, turn
on the ignition switch, check horns尧
instruments on the instrument panel尧
turning lamps尧 braking lamps尧 the
angle and position of the rear view
mirror.
淤 Routine start
13
HFC1048
series trucks
Turn the key to the START position
oil level is normal and the engine
After engine operates normally, de鄄
the engine can stop.
run in moderate speed. On better
(shown in the right figure), the engine
have abnormal noise. Check whether
press the clutch pedal, shift into low
When running the vehicle, shift the
running condition, the vehicle can op鄄
can start. After starting, loosen the
the color of exhaust is normal.
gear, loosen the parking brake, and
gear according to the change of
erate in fast gear, and at this time the
accelerator pedal immediately and
盂 After starting the engine, do not
press the horn once. Making sure
road and landform. If find that the
vehicle speed is high, the fuel con鄄
keep the engine working in low
depress the accelerator pedal vio鄄
that the vehicle can be operated
engine power is in abundance and
sumption is low, the economy of fuel
speed. Depressing the accelerator
lently, loosen the accelerator pedal to
safely, loosen the clutch pedal slowly
the rotating speed rises, it illustrates
is good.
pedal violently is forbidden.
keep the engine operating on idle for
and depress the accelerator pedal
that the primary gear is not appropri鄄
When shifting, do not just see the
于 Start in winter
some time. After the temperature of
properly at the same time to start the
ate, the vehicle should be shifted to
shifting lever. You should watch for鄄
When the weather is very cold, the
engine rises and the engine operates
vehicle. After starting the vehicle, the
the next fast gear in time. After shift鄄
wards,
start of diesel engine can take fol鄄
stably, uplift the clutch pedal slowly.
foot should get away from the clutch
ing, if not finding shortage of power
steadily with your left hand, let the
lowing measures:
hold
the
steering
wheel
starting switch
b. Heat up the oil up to 80益耀90益 ,
榆 Generally after the temperature of
pedal. Do not keep the foot on the
and chattering of transmission, the
center of the palm of your right hand
a. Cooling water use hot water, and
engine become more than 60益 and
pedal to avoid the burning out of the
shifting operation can be considered
stuck to the top part of the shifting
unclose
and then add it into the oil pan.
the operating (sound) of the engine
clutch friction disc.
right. If find shortage of power or the
lever and push or pull it to the need鄄
adding hot water. When the hot water
After starting the engine, check the
components尧the reading of instru鄄
Note: Do not let the vehicle running
vehicle speed decreases, the vehicle
ed position with the force of your
flowed out and the engine body be鄄
operating state of the engine and in鄄
ments are normal, the vehicle can
in first or second gear for long time
should be shifted to a low gear. If the
right wrist.
came warmer, close the drain switch.
struments at different rotating speed.
run. Do not run the vehicle in low
to prevent from increasing the wear
vehicle runs normally after shifting,
Especially check the oil pressure.
temperature to avoid intense wear of
and the fuel consumption. Loosen
the shifting into low gear is right.
Check if there have leakage of wa鄄
the engine.
the clutch pedal rapidly or depress
for
ter尧 oil and gas, check whether the
2冤Starting and shifting of the vehicle
the accelerator pedal insufficiently,
bridge and meeting, the vehicle can
14
the
drain
switch
when
safety,
when
swerve尧passing
15
HFC1048
series trucks
2.Running尧 swerve尧 turnaro und尧 backing and braking of
the vehicle
1) Running
Keep enough distance to the forego鄄
ing vehicle when running on flat
road. Select vehicle speed according
to the vehicle model尧mission and
concrete condition of road, generally
select the speed of 50耀70 km/h.
Let the vehicle running in the first or
second gear when starting, upgrad鄄
ing under heavy load and running on
bumpy road or on the road having
obstacles. But the vehicle can not
running in the first or second gear
too long in normally running. When
upgrading with heavy load, shift the
shifting lever into low gear to avoid
16
overloading of the engine.
loblolly, prevent the water from enter鄄
vehicle more carefully to avoid de鄄
speed to less than 10 km/h, swerve
direction, and after the skidding
When running, do not increase or de鄄
ing into air intake lines of the engine尧
creasing the braking performance of
the vehicle slowly alongside the right
stops, correct the running direction.
crease the vehicle speed abruptly
rear axles and transmission case.
the brake because of moist. Do not
side of the road. When swerving, turn
3) Turning around
and not shake the steering wheel
Check rear axles and transmission
take emergency braking operation to
the steering wheel uniformly accord鄄
When turning around for 180毅, select
without reason, listen whether there is
case for entering water after pad鄄
avoid the danger of skidding.
ing to the situation of road, the
the square尧large -scale crossing or
abnormal noise or not, check the
dling. If find water, drain it and add
2) Swerve
swerving track should be transited
flat broad road which have little traf鄄
reading and indicator lamp of all in鄄
gear oil with specified quantity. After
Swerve of the vehicle produces cen鄄
smoothly, the turning motion should
fic flux and turn around the vehicle at
struments for normalization. If find
paddling, the vehicle can not run in
trifugal force which can be bigger
not be too great or too small. Do not
a time along the running direction. At
abnormal noise or abnormal events,
high speed. You should depress the
when the vehicle speed becomes
turn or return the steering wheel
the 50耀100 meters position in front of
stop the vehicle immediately and
braking pedal every now and then to
higher. The force can bring turning
suddenly. Try your best to avoid tak鄄
the turning spot, reduce the vehicle
check it, take necessary adjustment
resume the braking performance as
over in the transverse direction in
ing braking operation while turning
speed, shift into low gear and send
and repair.
soon as possible.
serious condition. Therefore, at the
the steering wheel, especially emer鄄
out the turning around signal.
When downgrading, do not stall the
When running on the ice or snow
50 耀100 meters position before turn鄄
gency braking.
When turning around with running
engine. When downgrading steep
road, run with steady speed. Do not
ing the vehicle, you should ring the
When steering, if found skidding of
forwards and backwards, first send
ramp, shift the shifting lever into low
take emergency braking and not turn
horn尧 turn on the turning lamp and
front wheels, put up the accelerator
out the turning around signal, reduce
gear and take braking operation at
the steering wheel fiercely to avoid
reduce the vehicle speed. When
pedal and turn the steering wheel in
the vehicle speed and run towards
intervals to avoid the over fast of the
skidding danger. Keep long safety
running on the freezing and muddy
the contrary direction; if found skid鄄
the right side of road. When ap鄄
vehicle speed.
distance from the foregoing vehicle.
road or in the weather of heavy rain尧
ding of rear wheels, turn the steering
proaching the preset spot for turning
When running across shallow river or
When running in heavy rain, drive the
fog尧 wind尧 sand, reduce the vehicle
wheel properly along the skidding
around, observe the situation of road,
17
HFC1048
series trucks
turn the steering wheel to the left ex鄄
vehicle is stopped completely. After
on the road for some reason, park
After parking, especially after the en鄄
treme position rapidly and let the ve鄄
shifting into the reverse gear, the
the vehicle near the roadside and not
gine operates with heavy load, do
hicle running to the left side of road
back -up lamp lights. The vehicle
park the vehicle on the running lane.
not stall the engine immediately, but
slowly. When approaching the road鄄
speed must be less than 5 km/h
Under the exceptional condition like
keep the engine operating in low
side,
wheel
when backing. If the driver can not
breaking down in the middle of road,
speed for several minutes. After the
rapidly. After observing the situation
discern the situation behind the ve鄄
two caution plates should be placed
temperature of water decreases less
behind the vehicle, start and turn
hicle because the vehicle is loading
on the position of 200 meters in front
than 70益, then stop the engine.
around the vehicle, turn the steering
or other reasons, the backing oper鄄
of and behind of the vehicle.
When parking midway in winter, take
wheel to the right extreme position at
ation must be commanded by one
Avoid parking on the ramp. If the
the heat preservation and antifreez鄄
the same time. When approaching
person who is outside the vehicle.
vehicle must be parked on the ramp,
ing measures for the engine. Prevent
the roadside, return the steering
Do not back the vehicle blindly.
pull up the parking brake lever to the
the oil tank from insolation in sum鄄
wheel rapidly and stop the vehicle. If
5) Parking of the vehicle and stop of
extreme position, shift into low gear
mer.
the turning around operation can not
the engine
and block the vehicle with triangular
After the vehicle runs a day, routine
be done once time, repeat the above
When preparing to park the vehicle,
chocks or stones to prevent it from
service and inspection should be
operations.
the vehicle speed reduces or the ve鄄
sliding. Note: Make sure that the
done on the entire vehicle.
4) Backing
hicle slides out of gear and indicates
parking brake can work reliably when
The operation of shifting into reverse
with turning lamp. After the vehicle
parking on the ramp, at the same
gear or shifting from reverse gear to
parked, pull up the parking brake
time turn on the emergency warning
onward gear can be done after the
lever. If the vehicle must be parked
signal indicator lamp.
18
return
the
steering
19
域.Engine
(玉). Inlet air尧 exhaust systems
(域). Cooling system
(芋). Accelerating transmission system
(郁). Fuel supply system
21
HFC1048
series trucks
Notice院The details of the engine structure尧 assembling尧 adjustment尧 using and maintenance can be consulted in the oper鄄
ating specification of relevant engines.
The position of the engine card
Cause院The card of engine is on the top cylinder head or on the side of engine .It writes the model number of engine ,
sequence number ,declared power ,declared speed and the factory date .Pay attention to find it in order to using it
clearly and convenience.(as picture)
(玉). Inlet air尧 exhaust sys鄄
tems
1. Brief description of the struc鄄
ture
Inlet system includes air inlet pipe
assembly尧 air filter assembly尧 intake
manifold. Exhaust system includes
exhaust pipe尧 muffler and exhaust
tailpipe
Use and maintance院
1) The service life of the engine has
great relationship to the workmanship
of the air filter. Absolutely forbid that
the engine works without air filter or
on the condition that the air filter is
disabled. Taking the intake opening
of air filter as the original intake open鄄
ing is forbidden.
22
2) For every 1000km running, check
through the air inlet pipe, larger dust
the inlet and exhaust manifold for the
particle can be separated from the
following:
air by the function of cyclone vane,
a. Check nuts for looseness, when
then can be thrown into the dust
tightening the nut on the inlet and
gathering plate, the separated air
exhaust manifold, the torsion force
keep on moving and enter into the
should be equable, or else the air
cylinder by the filtering function of
leakage can occur.
the paper element.
b. Check the inlet and exhaust mani鄄
For every 1000km running, check
fold for crack and hole, check the
and maintain the air filter. When run鄄
gasket for damage and erosion, if
ning in the condition of excessive
found, replace it with a new one.
dust, the running mileage interval for
Air filter
inspection and maintenance should
The function of air filter is to filter out
be shortened suitably.
the dust and the sand in the air en鄄
Cleaning of the air filter:
tered into the engine.
1) Remove the dish-shaped nut from
Air filter is cyclone dust gathering air
the end cover. Take away the end
cleaner with paper filter element. Af鄄
cover, remove the inner nut and take
ter external air enters into the air filter
off the filter element assembly.
23
HFC1048
series trucks
2) Clean the cover cap and the inner
3) To cleaning dust unloading valve
The concrete structure and type of
found it is not enough, add liquid to
speed for 5 耀10 minutes, then after
preservative liquid, replace it entirely
part of the housing with dry and
in order to usage well .
the cooling system components can
the specified height.
stopping for 10耀12 hours, restart the
at once. The color of antifreeze liquid
clean cloth.When cleaning, do not let
4) Tight and close the rubber of
be consulted in detail in the operat鄄
3) Drainage of cooling system. In
engine and run for 10 耀15 minutes.
is green or blue, if having deteriorat鄄
the moisture enter into the air filter.
connected brake .
ing specification of relevant engines.
cold region and in winter, without us鄄
Then drain the aqueous solution and
ed, the color should be dull red be鄄
5) Clean the air filter element: clear
2.Using and maintenance of co-
ing antifreeze preservative liquid, if
clean
cause of impurity infiltration.
long time parking or receiving the
cleaned water.
1) Recommend using long effective
vehicle everyday, the cooling system
3.Advertent proceedings in using
away the dry dirt or dust with com鄄
pressed air gun (air pressure should
be less than 690kpa),blow from the
inner side of filter element towards
outside. Do not clear away the dirt or
the dust with beating or knocking.
(域). Cooling system
1尧cab 2尧vent hose (1) of the air filter
3尧intermediate connecting pipe
4尧connection board
5尧vent hose of the air filter
6尧right longitudinal member of the frame
7尧air filter bracket
8尧intake pipeline of the air filter
9尧connecting hose 10尧air filter
schematic diagram of air filter
24
1.Brief description of the struc鄄
ture
Cooling system is closed water cool鄄
ing pressure cycle type. It is com鄄
posed of radiator尧coolingfiuid尧ther鄄
mostat尧 fan 尧bulge radiator and wa鄄
ter inlet and outlet pipes of radiator.
oling system
antifreeze preservative liquid for cool鄄
ing fluid. In the north, it can avoid the
damage of engine because of the
freezing of cooling fluid in winter; in
the south, it can increase the boiling
point of cooling fluid in summer to
avoid the damage of engine over鄄
heating because of air resistance in
high temperature.
2) Before dispatch the vehicle every
time, check the liquid level in the ra鄄
diator and in the bulge radiator, if
must be drained. And you should
open the water filler cap of the radia鄄
tor to avoid the incomplete drainage
of cooling water.
4) After engine operating for long
time, furring can produce in the
cooling water and it should be
cleaned in time. Clean it with follow鄄
ing method: mix
caustic
soda
700 耀800 gram
and
150
gram
kerosene, add the mixture liquid into
the cooling water, run in medium
the
cooling
system
with
long effective antifreeze preser鄄
To adjusting the degree of ten鄄
sion of the fan belt
1.The disadvantage of engine is
vative liquid
tighten or lax the fan belt .Before use
1) Choose suitable antifreeze liquid
it please read the operating specifi鄄
according to the minimum tempera鄄
cation .
ture of the region, if the minimum
2.The way of adjustment :firstly to
temperature of the region is -25益 ,
adjusting blots ,secondly to adjusting
antifreeze liquid whose solidifying
,third
point is -30益 should be chosen.
wedge -shaped belt .Using finger
2) When compensating antifreeze
press way ,to pressing for 98/N .The
preservative liquid, choose the same
standard of crankshaft pulley is 25要
model to avoid deposition.
31mm .The standard of fan belt is
3) If find deterioration of antifreeze
7要8mm.
to
adjusting
the
tight
of
25
HFC1048
series trucks
(芋) Accelerating transmis鄄
sion system
1.Brief description of the struc鄄
ture
1尧stalling wire drawing 2尧assembly
of accelerator mechanism and pedal
3尧front floor of the cab
4尧acceleration wire drawing
5尧stalling oscillating arm of the engine
6尧acceleration oscillating arm of the
engine 7尧frame
schematic diagram of accelerating
transmission equipment
26
Accelerating transmission equipment
bling and little operating noise.
without jamming. When releasing the
pression ignition with the air rapidly.
2) Fuel tank:. The tank install the filter
is composed of accelerator pedal
2冤Accelerating wire drawing:
pedal, it should be returned freely.
Its operating state has important in鄄
gauze inside the fuel filler port to pre鄄
mechanism尧 accelerator wire draw鄄
It operates by the soft wire drawing.
3) When depressing the pedal, if the
fluence to the power and economy
vent impurity of large particle enter鄄
ing and acceleration governor arm of
And it has traits of reliable structure尧
free play is too big or the opening
performance of the engine.
ing into the fuel tank, set oil drain
the engine. It is shown in the figure in
convenient layout尧 little frictional re鄄
extent of the accelerator is not e鄄
1) Coarse cleaner院the car's fuel pip鄄
plug on the bottommost position of
the above page.
sistance and stable transmission.
nough, adjust the position of bolts.
ing have a DX150T spin-on oil filter袁
the fuel tank to drain the deposit and
When depress the pedal, driving
3冤Hand throttle wire drawing:
flow volume is 1.5L/min. It can transi鄄
water on the bottom of tank when
medium of the mechanism pull the
Using with the foot throttle can quick鄄
tion impurity and can separate water
cleaning the fuel tank.
wire drawing, control the opening
en the preheating of the engine or in鄄
and oil
Using and maintenance of coar-
extent of the accelerator to increase
crease the idling speed.
or decrease the speed
2.Using and adjustment
1冤 Accelerator pedal mechanism:
1) Check the chucking position of the
Accelerator
mechanism
take
the
linkage
rod
and
the
accelerator
newest structure of ISUZU truck. It
mechanism for rightness and reliabil鄄
operates simply and reliably and has
ity, check the direction of the wire
accelerating wire drawing and hand
drawing for straight and check on
throttle wire drawing; the pedal is the
the cornering for smooth transition.
structure with injected molding and it
2) The pedal should be depressed
has the trait of convenient assem鄄
easily and to the extreme position
渊郁冤 Fuel supply system
1.Brief description of the struc鄄
ture
se cleaner
Fuel supply system is composed of
1冤To tight all the pipe line .
fuel tank尧 fuel filter尧 fuel pump尧fuel
2冤When the DX150Tprecipitator wor-
inlet line and fuel return line.
ks for 1000/km and 200hours, to wa鄄
The function of the fuel supply sys鄄
terproofing.
tem is to inject the specified quantity
diesel fuel of specified pressure and
good atomization into the cylinder at
the correct time with definite interval
of injection according to the operat鄄
ing requirement, and take good com鄄
diesel precipitator
27
芋尧Chassis
渊玉冤Clutch
渊域冤Transmission
渊芋冤Drive shaft
渊郁冤Rear axle
渊吁冤Frame
渊遇冤Suspension set
渊喻冤Front axle
渊峪冤Steering system
渊御冤Brake system
渊愈冤Wheel & Spare wheel riser
29
HFC1048
series trucks
渊玉冤Clutch
1.Brief description of the struc鄄
ture
The clutch equipped for this series
truck is single -plate dry type di鄄
aphragm spring clutch, outside di鄄
ameter of the driven plate is 椎254.
The hydraulic control unit of the
clutch is composed of the clutch
pedal尧oil storage cup尧 release cylin鄄
der (master cylinder)尧 wheel cylinder
and oil pipe. It is shown in the below
figure.
Adjustment of the clutch operat鄄
ing system
1冤Adjust the limit screw of the clutch
pedal
(below figure) to make sure
that the free play of the pedal is 3耀
5mm.
30
2冤Adjust the mas ter cylinder of the
the spherical nut until it contacts with
lowed, or else, it can result in the
hydraulic pipeline with brake fluid,
clutch: loosen the locknut on the
the release fork, then turn back the
Maintenance and adjustment
disability of the pedal尧 deficiency of
then loosen the air bleed screw, air
push rod of the master cylinder, ro鄄
spherical nut on the push rod for 3
Long time use or incorrect adjust鄄
the effective travel and incomplete
bubble can be puffed from the oil
tate the end of the push rod to con鄄
circles, tighten the nut, install the re鄄
ment and incomplete air bleeding of
tact gently the with piston of the
turn spring of the release fork.
release of the clutch etc. So the
ring if there have air in the pipeline.
the clutch can bring the halfway re鄄
clutch can not work normally. The
Repeat the above-mentioned opera鄄
lease of the clutch, let the clutch on
work of air bleeding should be com鄄
tion until the air bubble disappear .
the half contact state for long time,
master cylinder, then rotate the push
rod for 3/4 circle in the contrary di鄄
rection, tighten the locknut of the
push rod, now the clearance be鄄
tween the push rod and the piston is
about 0.5耀1mm.
3冤Adjust wheel cylinder of the clutch
Take off the return spring of the re鄄
lease fork, push the wheel cylinder
piston to the bottom of the cylinder,
loosen the locknut on the push rod,
push the release fork towards the
backside of the engine to the posi鄄
tion where the release bearing and
the release fork contact barely, turn
clutch pedal
4冤Bleed air from wheel cylinder of
the clutch
Having air or oil leakage in the hy鄄
draulic pipeline of the clutch is unal鄄
pleted by two persons in the best,
aggravate the wear of the clutch
one person depress the clutch pedal
pressure plate and friction linings.
in the cab, the other bleed the air in
The decrepitation尧 burnt and exfolia鄄
the wheel cylinder. The schematic
tion of the friction lining, and the
diagram of air bleeding for the clutch
burnout of the release bearing also
wheel cylinder is shown .
can result in the abnormal operation
Take off the rubber cap of the air
of the clutch. When maintenance, all
bleed screw on the wheel cylinder,
kinds of clearance of the clutch must
link a plastic pipe on the air bleed
be adjusted. When doing the third
screw, put the other end of the pipe
into the container filled with brake
fluid, depress the clutch pedal sever鄄
al times, fill the master cylinder and
1尧release fork
3尧copper washer
5尧wrench
7尧container
2尧dust cover
4尧wheel cylinder
6尧soft plastic pipe
8尧braking
maintenance for the trucks ,you must
clean general/dispant cylinder and
liquid reservoir tank ,then fill grease
to hole of disengaging shaft.
31
HFC1048
series trucks
渊域冤 Transmission
1.Brief description of the struc鄄
ture
The transmission equipped for the
chassis of this series truck is manual
discontinuously variable transmission
with fixed shaft gear, and it has five
driving gear and one reverse gear.
The synchronizer has been equipped
on the second尧 third尧 fourth and fifth
gear. And the synchronizer is syn鄄
chromesh gear system. The synchro鄄
nizer for the first gear and the reverse
gear is holding mesh gear. Using of
the synchronizer on the transmission
can make the shifting operation con鄄
veniently, decrease the wear and
shock on the gear end, extend the
service life of the gear tooth, shorten
32
the shifting time, increase the aver鄄
shaft is steel cable, the operation of
3.Using and maintenance
when the engine work at over fast
age vehicle speed and reduce the
gear selecting or shifting is completed
1) If found the gear shifting can not
speed to avoid accelerating the wear
working intensity of the driver. The
by the pushing or pulling motion of the
operate or operates difficultly when
of the synchronizer.
gear shifting operation is accom鄄
steel cable. The ball on the flexible
the engine is not working, it shows
5) When shifting, the force should be
plished with the shifting control de鄄
shaft and adjusting screw are used for
that the gear shifting lever
gentle. The hand force must be act鄄
vice of the transmission, which is
adjusting the total length of the flexible
flexible shaft) have bad adjustment
ed on the control lever until the gear
shown in the figure on the next page.
shaft to ensure that the gear selecting
reaches the correct position. Shifting
2.Shifting control device of the
or the bolt becomes loose, now you
or shifting can be to the correct posi鄄
must adjust the control lever (or the
with flap of one push and one loosen
flexible shaft), check and tighten ev鄄
is inappropriate and the shifting op鄄
ery bolt and every nut.
eration can not be accomplished
2) If found out-of-gear when running
easily in this way.
on the rough road, the control lever
6) Only after the vehicle stop and
(or the flexible shaft) have bad ad鄄
keep steady, the shifting from driving
justment, and it should be adjusted
gear to reverse gear or from reverse
correctly.
gear to driving gear can be done, or
3) If found free play of the control
else, the gear can be damaged.
lever too large, check and tighten
7) As the fifth gear is over -speed
every bolt and every nut.
gear, in order to avoid the damage
4) Do not take gear shifting operation
of the overspeed gear spoke , its
transmission
The shifting control device of the
transmission is long distance soft ca鄄
tion. There have symbols of each gear
on the control handle of the transmis鄄
sion, it is shown in the below figure.
ble type with high floor and short lever,
and it take two flexible shaft to imple鄄
ment the gear selecting and shifting
which is shown in the figure on the
next page. It is composed of operat鄄
ing lever seat尧flexible shaft for gear
selecting or shifting and the bracket.
The core shaft of the interior flexible
control handle of transmission
1尧 gear shift control lever
2尧dust cover 3尧handle
4尧floor of the cab
5尧flexible shaft for gear selecting
6尧transmission rocker arm for gear
selecting
7尧side bracket for gear selecting
8尧flexible shaft for gear shifting
9尧fixed bracket of the gear shifting
flexible shaft
10尧rear cover of the clutch
11尧transmission rocker arm for gear
shifting
schematic diagram of the transmission
gear shift control device
(or the
33
HFC1048
series trucks
running speed is under 50 km/h, the
the lubricating oil should be replaced
second shaft for tightness and the
fifth gear can be used .
after the running -in period of the
operating state of the component in
8) When running, if find there is ab鄄
new vehicle expires. Under general
the transmission frequently, because
normal noise in the transmission,
condition, for every 6000 km running,
the vent plug is blocked by dust and
stop the vehicle and check it, elimi鄄
replace the lubricating oil once.
pressure in the transmission increas鄄
nate the malfunction.
When replacing the lubricating oil,
es, the oil seepage or leakage may
9) When sliding on the downgrade,
first drain the oil in the transmission,
be found, so the vent plug should be
stalling of the engine is unallowed,
prop up the rear axle, shift the trans鄄
cleaned periodically.
starting the engine with the inertia of
mission into the reverse gear, add
13冤 The movement parts of shifting
sliding on the downgrade is forbid鄄
the kerosene, rotate the transmission
operation should be kept good lubri鄄
den to avoid the damage of the gear
for 2耀3 minutes, then drain the kero-
cating, or else, the shifting operation
and the synchronizer.
sene, add the pure gear oil.
may become difficult because of the
10) In the running -in period of the
11冤 Check the oil level in the trans鄄
wear of the movement parts. If found
new vehicle, because the metal
mission frequently, if found the level
the position of gear selecting is in鄄
chipping which was produced by the
is under the lower edge surface of
correct, or gear shifting become dif鄄
frictional function between new parts
the oil filler bolt hole, sufficient oil
ficult or the transmission is out of
is bad to components in the trans鄄
should be added.
gear automatically in using, firstly
mission, especially to the life of the
12冤 Check the outside bolt of the
you should readjust the gear select鄄
conical ring on the synchronizer, so
transmission and the flange of the
ing and gear shifting mechanism.
34
(芋) Drive shaft
1.General structure
The two-piece driveshaft, connected
with transmission on the front end
and with rear axle on the back end.
2.Use & Inspection
1冤Driveshaft has been counterpoised
in factory, it should be ensured not to
be impacted in use and not to be
knocked and stacked in disassemble
and carry. Replace if the shaft is dis鄄
torted or the balancer is desquamat鄄
ed, otherwise there will be vibration,
noise, and extra impact in travel, it
can damage power train and endan鄄
ger driver.
2冤Regularly check the cross shaft
needle bearing, check the sealing of
the slide spline and replace the oil
on what you need to changing nee鄄
seal when necessary
dle bearing universal joint.
3冤The first maintenance ,to fill grease
When you do the third maintenance ,
to universal joint ,slide spline ,oil pis鄄
should be disassemble the driving
tol ,driving spindle and quickly tight
spindle .Pay attention to sign on
the blot in order to sliding the univer鄄
flange ,cross shaft ,link fork, slide
sal joint .According to moment ratio
spline in order to mounting .When
to checking and tighten driving spin鄄
you finished all the maintenances ,
dle and the middle parts of bearing
please do the blance check , the
blots.
standard of dyramic blance is 2750
The second maintenance ,to check鄄
r/min.The amount of unbalance is
ing is there anything fall down about
more than 144g.cm遥
problems about move the universal
渊IV冤 Rear axle
joint .when cross shaft in the middle
tion rear axle ,as the final part of
the dirt proof boot ; is there any
of the needle bearing .The distance
would not be very large .If it is too
large ,you would be disassemble the
universal joint and you can depend
The brief of structure 院Single reduc鄄
power train of truck ,is the driving
axle ,and it is composed of final
drive and differential and axle hous鄄
ing .Final drive can not only change
35
HFC1048
series trucks
the direction of driving force ,but also
ferent speed from the right wheel.
(0.40mm, 0.45mm, 0.5mm).
three points, and 2 ~3 teeth should
release1 辕 3要1 辕 4circle遥 Tighten the
and bearings of final drive, for they
reduce the rotate speed .It is com鄄
Rear one -piece banjo style axle
(3) Check final drive for meshing be鄄
coated at every point. Then rotate
force moment to 490要588N.m
have been matched and adjusted in
posed of drive pinion and driven
housing is made by means of weld鄄
tween drive pinion and driven gear.
gears clockwise and anti -clockwise
factory. Do these only when gear
gear and final drive .The drive pinion
ing punched armor plate.
The contact area and side play be鄄
to get the trace of contact area (see
worn and free play is beyond the
is composed with drive shaft ,whose
Meshing of tooth face and clearance
tween drive pinion and driven gear
the right figure).
limit value, or when bearing axial
end with spline is connected with uni鄄
adjustment of final drive
can be adjusted by means of adjust鄄
The teeth area is not suit the figure
clearance is beyond the limit, or
versal joint assembly by coupling
(1) Check drive pinion bearing for
ing shim and adjusting collar of dif鄄
(a)which should be adjust it .If the
when some of parts damaged.
flange .Center support is mounted in
pretension .The pretightening force of
ferential bearing. There are three
trace is slanting to the convex or
3冤Clean the vent plug regularly,
two opposite conical bearing ,so that
drive pinion bearing should be ad鄄
kind of shim is 0.30mm and 0.4mm
concave then adding the shims ;if
make sure that ventilation is expe鄄
it can suffer not only radical bearing ,
justed. Measuring in the bolt hole of
0.45mm, and the 0.5mm Normally,
the trace is slanting to the convex or
dite. A jammed air drain can bring
but also axial force. Drive pinion,
drive pinion bearing case, the tan鄄
the clearance between these two
concave ,then reducing the shims.
higher air pressure in rear axle, and
whose small-end journal mounted in
gential pull should be 15~30N.
gears is 0.15~0.25mm, while the side
Normal trace should be near the
it will result in lubricant leak from the
direct tapered roller bearing, can on鄄
(2)The pretightening force of drive
play ranges under 0.07mm. To adjust
small end ,as figure (a):Add shim if
Use & maintenance
drive pinion seal and other welding
ly support radial force. It is fixed on
pinion bearing can be adjusted by
side play, measure four points with
trace near the convex or concave
1冤Lubricate for hyperbola bevel gear
line.
the flange which located on top left
means of adding and reducing ad鄄
equal angle around the driven gear,
tooth root ,as figure (b)曰Reduce shim
is very strict, can be only specified
4冤Check the lubricant level in axle
of differential case by several bolts.
justing shim. Add shim can decrease
and the gauge outfit of micrometer
if trace near convex or concave tooth
gear oil. Don't use or mix with other
housing regularly. Check the lubri鄄
A differential, composed of differen鄄
friction torque, while reducing shim
should be in a vertical position. To
top , as figure (c).
gear oil, or will result in quickened
cant for quality regularly, and replace
tial case and cross and four side pin鄄
can increase it. There are three kind
adjust tooth contact area, driven gear
Adjust the wheel hub bearing of rear
scratch and wear.
if the chroma and viscosity is abnor鄄
ions, let the left wheel rotate at a dif鄄
of
should be coated with red lead at
axle: to locking bearing and nut ,then
2冤Don't remove or adjust the gears
mal.
36
shim
according
to
thickness
37
HFC1048
series trucks
5冤Finished the third maintenance,
overweight , parking position and
2. Use & Maintain leaf spring
if too much wear.
road surface (commonly more than
disassemble the back cover .Then
road and so on. .So ,must following
1)At the beginning of running-in pe鄄
5冤At the second maintenance, doing
10km). Absorber don't have resis鄄
clean cavity and main reducer axle .
the request to driving .
riod, check the nut on U -type fas鄄
the first maintenance items .Then
tance if the temperature lower than
tening bolt and tighten it with speci鄄
disassemble and lubricant the spring
condition temperature; if one ab鄄
General Structure: The suspension of
fied torque when trochometer points
of plate , at the same time to check鄄
sorber have much lower temperature
this series of trucks is composed of
to 200km and 500km.
ing anti-roll stabilizer .
than the symmetrical one, the lower
multiply variable leaf spring 尧bidirec鄄
2)After running-in period, tighten the
6冤At the third maintenance, doing
one's
nut on U -type fastening bolt with
the second maintenance items . Then
smaller. Lower resistance result from
specified torque
disassemble all of the rubber to
lack in oil or from damage of some
loaded). Do it also when leaf spring
changing the news.
important part, and the absorber that
is replaced or reset.
7)Take notice of the orientation when
lack in resistance should be removed
to inspect.
To tight the fore moment nut and
blot.
渊V冤Frame
The brief of structure :This kind of
truck's chassis is across structure
渊遇冤Suspension set
tional hydraulic telescopic shock ab鄄
1.
3.
5.
6.
Front leaf spring 2. Front U bolt
bumper
4. Front shackle
Upper bracket of front suspension
Front absorber
7.nut
front suspension assembly
(with vehicle fully
resistance
is
much
more
Use & Maintenance :Using longitudi鄄
sorber and transverse stabilizer. Rear
nal beam and cross beam is to fixed
leaf spring is composed of main
the frame .Using weld and screw
spring and secondary spring, its
thread to connecting .So ,keep all the
stiffness changes little by little, so
3)Tighten the nut on U-type fasten鄄
replace leaf spring or operate on the
parts well to exerting the advantage
that vehicle is more comfortable for
ing bolt with specified torque (with
center bolt. Tighten each nut first,
2冤 Check the absorber for oil leak if
of the frame .When doing the third
ride.
vehicle fully loaded) every 2000 ~
then tighten nuts on front U -type
continuous abnormal vibration is de鄄
3000km.
fastening bolt with specified torque
tected. Oil leak should be dealt with
4) The first maintenance袁Check and
before tighten the rear ones.
on time, so that the absorber can
tighten bolts and nuts in your touch
3. Use & Check absorber
work normally.
on suspension. Check the rubber
1冤 Check the absorber for tempera鄄
3冤 Check absorber when maintaining
parts on the suspension and replace
ture after running a length on bad
vehicle. To check absorber, stick up
maintenance checking , if the screws
are lax that should be tight it. If the
cross beam have something wrong ,
should be mend it .
The reason of damage the frame is
38
1尧Frame
2尧Rear leaf spring
3尧Rear center bolt 4尧Rear absorber
5尧Secondary spring bracket
6尧Rear shackle clamp
rear suspension assembly
39
HFC1048
series trucks
it and hold its lower end by vise,
front axle, steering knuckle, steering
2. Adjustment
ing-in can be adjusted via adjusting
3) when doing the third maintenance
then pull and press it for several
knuckle king pin, hub and tie rod.
1) Adjustment of front hub bearing.
tie rod. Park the vehicle on a flat
,to disassembly the front axle then
渊峪冤Steering system
times. Normally the resistance is
See the next figure.
To adjust front hub bearing in axial
ground, jack up its header and orient
cleaning and checking it.
bigger when pulled, otherwise the
The front axle is I -beam. The toe鄄
a) If the distance between steering
tem of this series of truck is power
retightening force, tighten fastening
front wheels just as vehicle run for鄄
absorber is damaged or lack in oil.
ing-in is 3~6mm (diagonal tire) and
nut with wrench, and loosen knuckle
ward. Loosen locking nuts of tie rod,
knuckle and front axle is very large ,
In the case , to changing and mend鄄
1~3mm (radial tire). Proper orienta鄄
nut for about 120o. Rotate the hub
rotate the tie rod utile the toeing-in fit
should put a thrust shim on it to ad鄄
ing the parts ,then fill oil into shock
tion can make sure the vehicle stable
clockwise and anti -clockwise, make
the specified size.
justing .The distance is 0.1mm to be
absorber .In order to absorber parts.
and easy to control, so that can
sure that roller against the tapered
Use & Maintenance
good.
4冤 Always replace the oil seal when
lessen driver's fatigue and slower tire
face of bearing outer race properly,
1) The first maintenance .When doing
b) When the steering knuckle pin
you replace absorber rod. Don't dis鄄
wear.
then tighten nut to the position where
the first maintenance ,check the nut
and the bush's distance is 0.15mm,
assemble parts such as valve if un鄄
the rabbet aims the split pin hole.
tightly.
then to change new ones.The dam鄄
necessary.
Check the hub if it can rotate freely
2) When doing the second mainte鄄
age distance of the steering knuckle
5冤At the third maintenance ,disas鄄
and don't swing a lot. Now, distort
nance to checking damage about
pin is to 0.07mm,changing new ones.
semble the shock absorber and
the split pin and fix it.
steering knuckle , steering knuckle
c) The damage of steering drag rod
changing the new oil .Do not clean
2) Adjustment of clearance between
arm ;to checking about steering
ball end and ball end is too big ,then
knuckle and front axle. The clearance
knuckle pin bearing ;to checking
change the new ones.
is adjusted via adjusting shim, it
about the drag rod .According to the
d) When find out the damage of oil
should less than 0.1mm.
regulate ,disassembly wheel hub and
seal of the wheel hub , then change
3) Adjustment of toeing -in. The toe鄄
fill grease with it.
the new ones .
the shock absorber.
渊喻冤Front axle
1. General structure
Front axle assembly is composed of
40
1尧Front hub
2尧Brake drum
3尧Steering knuckle
4尧King pin
5尧Pitman arm
6尧Front axle
7尧Tie rod
front axle assembly
General Structure院The steering sys鄄
steering system.
Power steering
The steering system composed of
steering control mechanism, linkage
mechanism 尧whole power steering
gear尧power
steering
pump
and
pipeline.
The energy source of the steering
system is depended on driver's
physical strength and power of en鄄
gine .In some emergent cases about
steering system that the driver can
control the direction .To compare
with some common machine steering
system , the power steering system
is very sensitive and secure.
41
HFC1048
series trucks
Operation Inspection for Steering
the engine ,then fill oil into it.
tion to the oil pump pipeline ,it can
ment temperature on 0 益 . (the dif鄄
The main idea is to prevent ,to check
iii. Check tight each conjunction part.
Mechanism
6冤Turing the steering wheel to the
not fill with air in it .keep cleaning it.
ferent number oil can't mix an us鄄
for scheduled time .Following about
iv. Check pipe conjunction part, in鄄
1) Put front wheels on a swivel table.
front.
Step:
age).The import power steering or
the ministry of communications stan鄄
sured and don't leak oil .
2) Rotate steering wheel clockwise
7冤Turn off the engine to checking oil.
a) Turn the steering out oil pump into
steering pump to choose to press oil
dard about the car JT 辕 T201要95叶The
c)Second class maintenance(10000-
and anti -clockwise to its limit posi鄄
If it need oil, then fill it.
the steering in oil pump.
with the DEXRONII model number
arts and crafts maintenance of car曳
15000 kms)
tion, to detect if it is fluent.
Note:To checking is steering oil on a
b) The return oil inlet connect with oil鄄
liquid.(American G.M. standard)
and city build ministry standard
i. Chang the power steering oil.
3) Let engine run in idle speed and
high temperature .If it has some trou鄄
can inlet.
check steering wheel for free play.
bles, then doing the 4 and 5 steps
4冤 In some troubles of power steer鄄
The use and maintenance of
CJl7要86
mending way of the city bus曳.
wheel.
The limit value of this free play is 15~
again or mending power steering
ing, the drive can use the hand
iii. Clean the power steering oil net.
35mm. Rotate the adjusting screw
pump.
steering but could not use for a long鄄
1)How to use of power steering
a)Daily maintenance: to checking the
truck when driving in order to your
Iv Check front axle, ball axle, steer鄄
clockwise to decrease the free play,
security.
ing knuckle, steering knuckle arm,
b)One class maintenance(2000-3000
steering knuckle frname.
kms)
v. Disassemble, length pull rod,
i. Each lubrication partto fill the
cleaning and checking parts in order
grease, the power steering should be
to insure them well.
fill the oil on time.
vi.The other parts, please read the
ii. Insure cross shaft , cross/lax pull
reference. (JT 辕 T 201要95 )
rodten ball end to moved vivid and
d)To install steering knuckle plumb鄄
not loose.
ing arm and locate blots. The daily
Use and Maintenace
time.
while rotate anti -clockwise to in鄄
1冤 Check the new truck to driving for
5冤 Don't steer when parking, since it
crease.
3000要4000km ,then fill oil to steering
will shorten useful life of parts.
4) When engine run in idle speed,
and cleaning oil net.
6冤 According to the regulate to fill
the torque of steering wheel should
2冤 Always checking the oil measure
hydraulic pressure oil, the environ鄄
be around 19.6N.
or oil quantity in the oil crock, if it has
ment temperature is above 0 益 ,
5)When staring the engine to turning
something wrong that change it .
change
steering wheel to two sides for sever鄄
3冤 Do not disassemble the steering
adopt L -HM 464# wear resistance
al times .When removing the air from
system for another side .Pay atten鄄
hydraulic pressure oil; the environ鄄
42
steering
system
should
power steering
a) Don't steer when parking for 5
minutes.
b) Forbid to steer the steering wheel
when can not moved.
c) Forbid to steer the steering wheel
in the same place.
d) Forbid to steer the steering wheel
speed for 90turn/m.
2)How to maintenance of power
steering
叶The technique condition
ii. Clean and check the steering
43
HFC1048
series trucks
maintenance:
i. Insure the location. Find out steer鄄
ing knuckle plumbing arm is fall, then
put them on.
1. Running brake system
1.1 Air brake
1) Brief description of this system:
Compared with hydraulic brake, air
ii. If the steering knuckle plumbing
brake can bring greater braking
arm have some mistake, change the
force under the condition that force
new ones.
on the pedal is not great and the
iii. Tight the steering gear and frame,
pedal stroke is not long; at the same
frame and frame blot.
time, dual-circuit air -pressure driv鄄
iv. When turning the direction, insure
ing braking device is equipped to
the length pull rob and steering
front and rear wheel separately, so
knuckle plumbing arm do not inter鄄
the braking is safe, reliable, labor -
vene for each other.
渊IX冤Braking system
Braking systems of trucks of this se鄄
ries are: parking brake system(center
drum) and running brake system (air
brake, hydraulic brake)
44
saving, and more effective; even if
one of the brakes does not work, the
vehicle can still brake safely.
2) Structure and theory (referring to
the following diagram)
Brake pipeline is arranged as fol鄄
lows: compressed air produced by
air compressor 1 comes into the
the auxiliary air reservoir and the rear
to the atmosphere by front and rear
main air reservoir 3 (namely wet air
chamber 4 of the main air reservoir in
air-deflating valves 11 and 13.
reservoir); and then the air is separat鄄
case that compressed air in the air
ed into two and come into the front
reservoir flows backwards. There are
chamber 9 of the auxiliary air reser鄄
interfaces for air pressure gauge 7
voir and the rear chamber 4 of the
and pressure -adjusting valve 6.
main air reservoir, the front chamber
When air pressure reaches 0.74 -
9 of the auxiliary air reservoir and the
0.84Mpa, compressed air props up
rear chamber 4 of the main air
valve of the pressure -adjusting
reservoir. Compressed air in the front
valve, and comes into upper cover of
chamber 9 of the auxiliary air reser鄄
the air compressor to make air inlet
voir and the rear chamber 4 of the
valve open and the air compressor
main air reservoir come into upper
idles. When brake valve 8 is de鄄
and lower chambers of brake valve
pressed, front and rear brake cham鄄
8, and then the air is transported
ber 2 and 12 operate at the same
separately to rear brake chamber 12
time, which makes front and rear
and front brake chamber 2. Check
brakes operate. When the brake ped鄄
valves 10 installed on ends of the air
al is released, compressed air in
inlet pipes of the front chamber 9 of
front and rear brake chambers go in鄄
Interface for air inlet
Interface for low pressure
Interface for clutch
1. air compressor曰 2. front brake chamber曰 3. front cavity on main gas cylinder
4. rear cavity on main gas cylinder曰 5. safety valve曰 6. pressure control valve
7. barometer曰 8. brake valve曰 9. additional gas cylinder曰 10. one-way valve
11. front quick-release valve曰 12. rear brake valve曰 13. rear quick-release valve
45
HFC1048
series trucks
Brake assembly
Adjusting arm
Brake
Full adjustment
Front brake has the same structure
1. Loosening fixed nut of brake shoe
base
with the rear brake. It is shoe brake
bearing pin and nut of binding bolt
grease periodically to lubricate ad鄄
with camshaft with fixed sustainer.
on cam bracket.
justing arm (maximum lubrication in鄄
When braking, front and rear shoe
2. Rotate brake shoe bearing pin so
terval is limited to 10000km), or else,
slices of the brake press to the rotat鄄
as to make clearance between front
and rear brakes of this brake system
life of adjusting arm will decrease.
ing brake drum by the action of the
shoe and bearing pin end the same
adopt imbalanced structure and are
2冤Check adjusting
counter鄄
same push force; so the rear brake
as that between rear shoe and bear鄄
mainly composed of brake chamber,
clockwise force moment periodically:
shoe is called power-reducing brake
ing pin.
brake arm and brake
rotate adjusting nut of adjusting arm
shoe. All above lead to imbalance of
3. Start braking, make brake shoe
counterclockwise when running every
forces that front and rear brake
friction disc lean against brake drum
20000km and measure whether the
shoes press on the brake drum, so
closely and brake camshaft auto鄄
rotary moment is bigger than 18Nm,
this kind of brake is called simple
matic positioned and tighten nut of
measure for three times repeatedly. If
imbalanced brake.
binding bolt on support frame.
the moment is smaller than 18Nm, it
Clearance between friction disc of the
4. Release braking and rotate worm
indicates adjusting arm has been
brake shoe and the brake drum must
so as to make brake shoe friction
damage and needs to be replaced
be proper, before adjusting the clear鄄
disc lean against brake drum closely.
the adjusting arm assembly.
ance, make the front wheel off ground;
Then counter -rotate worm, released
adjusting steps are as follows:
by 3/4r, brake drum should be rotate
The function of brake is to utilize
1冤Lubrication: mount oil month on
power produced by friction between
adjusting
brake drum and brake shoe slice to
absorb kinetic energy of vehicle to
decelerate or stop the vehicle. Front
1. return spring locating pin曰 2. roller shaft-brake shoe
3. roller-brake shoe曰 4. gripping ring-brake shoe roller
shaft曰 5/18. front brake shoe with liner assembly曰
6/19. front brake friction plate曰 7. brake cam曰 8. front brake baseboard with liner assembly曰 9. front brake dust cap曰
10. hex bolt曰 11. front brake air chamber support frame with liner assembly曰 12. front left brake air chamber assembly曰
13. hex bolt曰 14. front brake adjusting arm assembly曰 15. shoe shaft fixed bolt曰 16. front brake shoe-shoe shaft曰
17. front and rear brake shoe shaft-liner曰 18. return spring
46
arm,
use
lithium
arm's
47
HFC1048
series trucks
freely.
5. Test drive after adjustment, check
working condition of brake, whether
the brake drum get hot and whether
braking distance is proper. If not,
readjust it
Parts checking
To move the worm of brake arm to
adjusting
the
distance
between
brake assembly and brake drum .
The way院 to the worm for clockwise
and move it again and again when it
can moved.Then move the worm for
couter -clockwise to 1 辕 2要3 辕 4circle.
At last the drake drum work agility .
The distance between brake friction
piece and brake drum is 0.25c要
0.4mm袁camshaft is 0.45mm.
48
Brake valve
same new ones and do not have
ii Check the air compressor and
1.2 Hydraulic brake system
Brake valve is to adjust and control
dirty oil, shatter, chap.
clean the dust of air valve.
cylinder, control mechanism, brake
the whole brake system.
d)To change the friction and install
iii. Check the brake involucra which
tube, front brake and rear brake. It is
Use and maintenance
shoe plate and brake cam again in
needs news to changing it.
sensitive and reliable, and it is sim鄄
1)Take care of it
order to adjusting the friction piece
c) The third maintenance (24000要
a) Should check the tube pressure
and the brake cam.
30000km)
before driving, be air pressure mea鄄
2)Shedule time maintenance:
i. Check and adjust the brake valve .
cient when brake pedal is depressed
sure is 0.6 MPa square can drive,
a) The first maintenance (1500-2000
When it need new one then change it
completely and oil level is normal,
while driving in normally is in the O.
kms)
ii. Check the brake valve pipe .
there may be air in brake system.
74 - 0.84 MPas,should park the car
i. To excluding the oil from the gas
When it need new one then change it
Bleed system in follow sequence.
whether leak air or not and whether
cylinder.
iii. Clean all the pipe in order to keep
the compressor normal work or not.
ii. To fill with grease where need it.
it liquidity.
b)When driving the truck to check
iii. To checking and adjusting the
brake system. If it has something
tighten about air compressor .
wrong should be change it for an鄄
b) The second maintenance(10000要
other one.
12000km)
c)The damage of the brake shoe
i. Disassemble and adjust the brake
1) General Structure
b. Remove oil -drain plug of main
plate is too big, then changing an鄄
and adjust the distance between
The running brake system is hy鄄
cylinder or reservoir and fill it with
other one. The piece should be the
brake shoe friction piece.
draulic. It is composed of vacuum
brake fluid until fluid level reach the
connect to engine
vacuum pump
1尧Control mechanism
2尧Vacuum booster
3尧Master Cylinder
4尧Reservoir
5尧Vacuum cylinder
6尧Brake tube
7尧Front & Rear brake
the picture of running brake
booster, vacuum cylinder, master
ple to manipulate. See the last figure.
If you feel braking power is not suffi鄄
Firstly, bleed RR brake; secondly,
bleed LR brake; thirdly, bleed RF
brake; then bleed LF brake. Follow
these steps:
a. Clean air -drain screw of main
cylinder and wheel cylinder;
49
HFC1048
series trucks
edge.
2) Note When Use Brake Fluid
order to sweep old fluid away.
Jack up the wheel which you want to
The clearance should be adjusted in
c. Depress the brake pedal several
淤 The specified brake fluid of this
b. Fill system with brake fluid.
adjust and remove the seal plug. Dial
every time of maintenance. Check
times before hold it depressed and
series truck is synthetic brake fluid of
虞 Brake pedal's free play should be
the adjusting gear of wheel cylinder
drums with hands for temperature ev鄄
release the air-drain screw to bleed.
class JG3 (GB10830).
5 ~8mm after adjusted, or it will
piston accord the arrow near the ad鄄
ery time you park, adjust the clear鄄
Repeat doing this until air in tube be
于 Never use mixed brake fluid.
cause main booster work abnormally
justing hole on bottom plate with
ance if the temperature is too high.
bled completely. Keep a little oil left,
盂 Synthetic brake fluid is good at
and make brake drum over hot.
special adjusting screw and at the
Check wheel cylinders for leak, and
or air can reenter the system.
sopping up. They should be storage
replace the leather gasket if leak is
d. Fill reservoir with brake fluid.
in a clean sealed dry container, keep
Running brake
same time rotate the brake drum until
1. Brake pedal
2.Vacuum booster
and main cylinder assembly
3.Reservoir
4. Connection hose
5.Rear brake
6.Vacuum cylinder
7.Intake manifold 8.Front brake
9. Vacuum check valve
10.Connect to vacuum-alarm
要hydraulic tube
要要
vacuum tube
schematic diagram hydrostatic
brake system
50
1) General Structure
the drum can not rotated by hands.
detected. Protect drums from being
away from water, organic solvent,
The running brake is hydraulic drum,
Then rotate the adjusting gear back
wrong result from over heat and oth鄄
petroleum, and dust. Otherwise the
both front and rear is two leading
for 5 ~9 teeth, keep the pad 0.2 ~
er reason.
vehicle's capability of brake would
shoe brake. It is composed of bottom
0.45mm away from the drum, so that
Vacuum booster
be cut down seriously.
plate, wheel cylinder, brake shoe set
the drum can rotate freely again.
with pad, and return spring set.
3) Use & Check
1) General Structure
榆 Clean system with alcohol before
replacing brake fluid with different
Booster of this series of truck is dual
2) Adjustment of Running Brake
Replace the pad which is worn out or
diaphragm vacuum booster, which is
brand. Follow these if alcohol is un鄄
The clearance between pad and
damaged. Before installed, the new
composed of return spring, control
available.
drum will be bigger and bigger due
pad should be ground. Make sure
valve, rubber diaphragm, noise elim鄄
a. After drain all old brake fluid, fill
to wear. In order to ensure brake
that the new pad has not oil coat, al鄄
ination board, and so on.
reservoir with new fluid near to the
work well, adjust it regularly follow
so has not crack and chap and other
2) Adjustment
opening and bleed system again, in
these steps.
flaw.
Booster have been adjusted in fac鄄
51
HFC1048
series trucks
tory, don't disassemble it and protect
is parking. Also it can operate with
Then return the adjusting nut for 2~6
the diaphragm from been damaged.
running brake together in emer -
teeth. See the right figure.
1.3 Parking brake system
gence.
General structure院Every truck has
2) Adjustment
Normally,
the
clearance
seven wheels, one of which is spare
between
tyre.
parking brake drum and brake pad
Use & Check:
is 0.65mm, and it is homogeneous in
In order to use for a longer time,
upper and lower parts. The pad
please charge tire according
should be replaced often. Follow
1尧Control lever
3尧Frame
2尧Pull wire
4尧Parking brake
parking brake system
normal
wheel deviate from ground.
The parking brake system includes
pletely, shift gears to neutral position.
control lever, pull wire, and parking
c. Rotate brake drum until the hole
brake, as the last figure. Parking
gets its lowest position. Insert a
brake, which is mounted next to
screwdriver through this hole to stir
transmission, is center drum brake. It
the adjusting nut upward until brake
can act on drive shaft when vehicle
drum braked completely
2. Spare wheel riser
on the surface between inner tube
1) General Structure & Use
and outer tire. Wheel nuts should be
The spare wheel riser is driven by
tightened for two steps. Tighten all of
catenary suspension internal geared
them first before tighten them with
wheel, see the next figure. It is
specified torque according to diag -
mounted underneath the frame. To
onal sequence.
operate it, fix it on the frame and
tighten it with hand before rock back
to
for 15 degree.
2) Maintenance of Riser
when pressure is insufficient. It is
a. Jacking up rear axle until one
b. Release the brake handle com -
before installed. It should be talced
specified pressure value. Never drive
these steps.
control mechanism
52
渊 愈 冤Wheel & Spare wheel
riser
that
pressure
Check riser for loose every time
increases
before drive. Check chain and carrier
during travel, and don't try to reduce
it
adjustment of the clearance between
brake pad and drum
Use & Check:
Check and adjust the clearance
between brake pad and drum.
by
deflating.
Check
the
spring for crack and replace if
tire
necessary. In order to prevent it from
pressure when tire is not hot. If the
two center patterns on tire tread
touch against ground under fully
loaded, the pressure is normal.
Clean the rust and other dirty on rim
rust, grease the gearing regularly, so
In order to make tires wore uniformly,
that it can be easy to operate.
exchange wheels each other accor-
The third maintenance, should be
ding to the figure.
prepare wheel.Then cleaning,checking ,install it again.
53
HFC1048
series trucks
IV尧Electrical equipment
(玉) Starter
(域) Generator and adjuster
(芋) Illumination equipments
(郁) Battery
1尧Frame
2尧Spare wheel riser as鄄
(吁) Sensor
sembly 3尧Eccentric wheel
4尧Spare wheel 5尧Chain 6尧Carrier
spare wheel riser set
54
55
HFC1048
series trucks
(玉)Starter
Note:
1) Starter should be connected with
battery correctly.
2) Every time start, don't keep starter
work continuously for more than 15s
and stop for 1-2 seconds in the in鄄
terval, since over hot may damage it.
Rest it before try start once again.
3) After several continuative failures,
should be matched properly.
on the high lamp to lighten the road,
2) Never check generator by short -
but switch to low lamp when two ve鄄
circuit fire wire and magnetic field.
hicles pass each other.
3冤The diode and insulation of gener鄄
In order to see the road clearly ,
ator can be inspected with multime鄄
when you stripping and re-assembly
ter and
use
headlight that you sould be adjuste鄄
megohmmeter to inspect, also AC
ohmmeter.
Don't
ment the position . The way is to put
power whose voltage exceeds 200v.
the car on a evenly road then put a
(芋) Illuminate equipments
1. Headlamp
check starter, solenoid switch, bat鄄
This series of truck have two head鄄
tery, wires, and also oil supply sys鄄
lamps which are embedded in front
tem. Retry after trouble is shot.
of cab symmetrically. The headlamp
(域)Generator and adjuster
Note:
Right
Left
Right
10 m
tance between the car and the
for a line, from measuring cell screen
quest a left and right light to left and
to testing left, right, the far and near
right (the V is left-the V is left, the V
light beam to project light upon di鄄
is right -the V is right for the middle
rections to be partial to move a value
point) be partial to move a value to
respectively.
be no bigger than a 100 mms.
To adjusting the headlight' the up鄄
2. Small light
headlamp(old series)
Use the measuring cell to testing.
rightess and the level. To adjusting
Two small lights are embedded on
the passing beam , make it match di鄄
the two symmetrical corner of front
Put the car and the measuring cell
agram the shining area center re鄄
panel. They should be turned on
screen is about 10meters.(as picture)
has two different pieces of filament
and can shine two different kinds of
with adjuster correctly, and the po鄄
ray, the brighter one is used as high
larities of generator and adjuster
lamp while the dimmer one is used
as low lamp. Running in night, turn
Screen
screen in front of the car. The dis鄄
which is called double filament bulb
1) Generator should be connected
56
Left
headlamp(new series)
57
HFC1048
series trucks
when vehicle park in dark or fog, al鄄
The battery of this series is aneroid,
Never fill battery with fountain or river
pacitance into battery. Cut down the
served in a place where is dry,
so when run in day to show the posi鄄
and it is sealed by a plastic case.
water, for them will do harm to it.
charging current for half after single
shady, cool, and ventilative And do
tion and the width of the vehicle.
This kind of battery has a big capac鄄
4)Check the electrolyte for specific
cell's voltage reaches 2.4V. After
the additional charging every month.
3. Fog lamp
ity and a light weight.
gravity and level. Do it every 10 ~15
charging battery for 3~5 hours, if the
Fog lamp can light further in fog than
2. Use & Note
days in winter, while do it every 5~10
specific gravity of electrolyte don't
other lamp. They should be turned
1) Keep the case clean, and protect
days in summer. Specific gravity is
rise any more, keep on charging for
on when vehicle run or park in fog or
battery from leak.
measured with gravimeter. Table 1
2 ~3 more hours. Table 2 shows the
in dark, so that vehicle can be seen
shows normal specific gravity of
relationship
clearly. Fog lamp is combined with
electrolyte.
and the corrected specific gravity
headlamp.
5)The battery should always being
value of electrolyte.
4. Ceiling lamp
charged. Check battery for electrical
6)Protect the joint of terminal post
voltage if engine is hard to be start鄄
and wire from dirt and loose, or the
The ceiling lamp is installed on the
between
temperature
Table 1 Specific gravity of electrolyte
Loca
Winter Summer
Where temp below -40益 in winter
1援310
1援270
Where temp above -30益 in winter
1.290
1援260
Where temp above -20益 in winter
1援280
1援250
Where temp above -10益 in winter
1援270
1援240
Where temp below 0益 in winter
1援270
1援240
ceiling, and it is combined with in鄄
2) Make sure that the hole on the
ed. Additional charging if it is detect鄄
terminal post will be burnt. Applying
side rear mirror together. It can light鄄
upper cap not choked, or the plate
ed that specific gravity of electrolyte
a Vaseline coat on the terminal post
en the cab, and also it can observe
will be damaged by the vapor pro鄄
lower than 1.18 ~1.20, or battery
after tighten the joint which can pro鄄
the condition behind.
duced own to electrolyzing.
plates will be vulcanized and it will
tect joint from rust and loose contact,
Measured temp
(郁)Battery
3)The electrolyte level should be 10~
do harm to the plates. Additional
so that engine can be started easily.
of electrolyte
15mm higher than plate. Only dis鄄
charging should be held for 13 ~16
7)If left unused for a long time, bat鄄
Corrected value
tilled water can be filled into battery.
hours, and it can breathe 1/10 of ca鄄
tery should be removed and pre鄄
on hydrometer
1. General
58
Specific gravity of
fully charged bat鄄
tery under 15益
Table 2
Corrected specific gravity
value of electrolyte under 15益
+45益+30益+15益 0益 -15益-30益-45益
(吁)Sensor
1. Fuel level gauge sensor
The fuel level sensor is sliding re鄄
sister. Floating on the fuel level, the
float rises and drops with the level's
change. This change causes the re鄄
sister connected in circuit and short鄄
ed, and make the electromagnetic fu鄄
el level gauge changes. Connecting
the fuel level alarm lamp's terminal
with the indicator light can shows the
lowest fuel level.
2. Water temp sensor
The temp sensor is a thermistor
which is mounted in water jacket to
detect the temp of cooling water. It is
connected
+0.02 +0.01 0 -0.01 -0.02 -0.03 -0.04
with
the
water
temp
gauge on instrument board. The wa鄄
59
HFC1048
series trucks
ter temp sensor has a negative tem鄄
perature coefficient and its resistance
decreases with the increase of water
temperature. Don't replace the sen鄄
sor with a positive temperature coef鄄
ficient one, or the water temp gauge
can not work correctly.
3. Oil pressure alarm
Oil pressure alarm is a normal closed
吁尧Vehicle service and maintenance
(玉) Notice during running-in period
(域) Daily maintenance
(芋) Second-class maintenance
(郁) Seasonal maintenance
switch. It will be opened when oil
pressure reaches and over the low鄄
est pressure, so that circuit is dis鄄
connected and indicator goes out.
60
61
HFC1048
series trucks
渊I冤 Notice during running in period
correct
1)Put so many goods in the trucks ,it
well. Don't drive in high speed when
aced again in second -class main -
service for the truck. As a result of
operation, and check brake system
will be curtail the car's life and also
the temp is below the normal temp
tenance.
the area and periodical service are
for normal air pressure.
influence your safety.
(between 80oC and 90oC).
3. After running-in period
different, so you should be take care
5) Check the shift gears for right; the
2) Don't run faster than the follow
5) Regularly check the engine cylin-
1) Replace engine oil and oil filter
of the truck to periodical service.
control parts for normality, transm -
speed.
der cover, wheel nuts, car body, and
core. Replace oil in transmission
The following references is how to
ission for shifting smoothly, and the
First gear
7km/h
the U -bolt of leaf spring for tighten.
case and rear axle, and replace
take good care of the chassis. Does
indicator should works correctly.
Second gear
14km/h
Check the steering system, brake
lubrication in steering gear, also hub
not
6) Check tires for proper air pres -
Third gear
26km/h
system, and clutch for normal oper-
bearing grease.
service.User can follow the basis
sure.
Forth gear
40km/h
ation. Check steering wheel for free
2) Check all external bolts and nuts
about area to do season service.
7) Check that if driver tools and
Fifth gear
56km/h
play. Check the brake pedal and
with specified torque.
Everyday routine maintenance
accessories are taken.
3) At the beginning, check the rear
clutch pedal for operating stroke and
Everyday you do not use the truck ,
2. During the running-in period
3) Apply grease on all points where
axle, transmission case, driveshaft,
free play.
should be lubricated.
you may check about it, in order to
1) The new truck should run on
and brake drum for temperature.
Note: Cylinder cover bolts should be
4) Do items of first -class mainten -
having a good technology.
smooth road, and don't make it load
Give ear to the sound of chassis
tightened twice when the cylinder is
ance.
1.To checking the engine and fill with
more than 50% of its rated load
when driving and stop to inspect if
cool,according to diagonal sequence
before it traveled 800km and don't
abnormal noise is heard, then shoot
from the center to sides.
load more than 75% before 1500km,
trouble before drive again.
6) The oil should be replaced after
operation.
or it will shorten truck's life and bring
4) Both the cooling water temp and
500km尧1000km尧 2500km (do it when
4) Check electrical equipments and
driver danger.
oil pressure should be noticed very
engine is hot), then it will be repl -
To improve vehicle's reliability and
economical efficiency and also to use
it longer, follow these during runningin period which is specified as about
2500km.
1. Before running-in period
1) Wa sh vehicle with water, and
check all bolts and nuts for tighten.
2) Check the radiator for enough
water,and check the engine,transmission, rear axle, and steering gear
box for enough lubrication,also check
battery and reservoir for liquid level.
3冤check brake system尧drive system,
and
62
steering
system
for
correct
lamp
instruments
for
渊域冤Daily maintename
When you find out some mistakes
about the trucks, you must check
and resolve it at the first time. It is
very
important
to
do
periodical
introduce
about
the
season
rust prevention and antifreeze oolant.
In winter,let out water from the
engine.If you want to using antifreeze
coolant that you must follow the air
temperature.
63
HFC1048
series trucks
遇尧Trouble shooting
2.To checking the measure lubricant
nut.
of technique and work request, do
oil of the engine.
8.Notice to fill water to the air
seasonal maintenance.
3.To checking the degree of tension
reservoir everyday.
At the beginning of summer:
1援Electrical parts trouble shooting
and measure of injury about the fan
( 芋 )Second -class mainte nance
1. Cleanout water scale in the coolant
2尧Clutch trouble shooting
belt.
4.To checking brake system when it
was working or sealing the atmospheric pressure (hydraulic pressure)
and pipe line.
5.To
checking
direction
the
system
work
about
circumstance,
When the ne w car was driving for
one period which should take daily
care and scheduled care.In order to
understanding the basis usage and
the technology.The car drive on a
system.
2. Replace lubrication for summer.
3. Fueling with #0 diesel oil specified
in GB252.
4. Clean up the battery and adjust
the specific gravity of electrolyte.
common road,the second mainten -
At the beginning of winter:
whether each bolt and the nut hasn't
ance mileage is 15000 kilometers.
1. Clean up the battery and adjust
loosen to move.The cotter pin is very
The car is going to do the second
the specific gravity of electrolyte.
tight.
maintenance,you can come to JAC
Then remove and charge it.
6.To checking weather the spring
Special Repair Shop and we will try
2. Install cold proofing devices, also
about armor plate
our best to help you.
kid preventation devices if neces鄄
sure of wheel.To finding where is
渊郁冤Seasonal maintenance
In order to keep some parts meet the
3. Fueling with #10 diesel oil speci鄄
harmful position about the wheel and
requirements of climate on aspects
fied in GB252.
7.To checking the atmospheric pres-
64
sary.
3援Drive shaft trouble shooting
4尧Transmission trouble shooting
5尧Front axle trouble shooting
6尧Rear axle trouble shooting
7尧Steering mechanism trouble shooting
8尧Running brake trouble shooting
9尧Parking brake failure shooting
10 尧Suspension set trouble shooting
11尧Wheel trouble shooting
65
HFC1048
series trucks
Being used, the vehicle will often be
fuel-gauge still motionless, it means
broke along with it travels longer and
the fuel-gauge to break down.
longer. In order to recover vehicle to
The hydraulic indicator isn't bright:
normal proper situation, also to pro鄄
Dismantle hydraulic -pneumatic alert
long its life, the trouble must been
machine bottom, and take it iron. If
find out and then been disposed in
the hydraulic -pneumatic indicator is
an effective way.
bright at this time, the elucidation is
* To shoot troubles of engine, see
hydraulic -pneumatic to report the
Engine Operating Instruction Manual
machine switch damage, should re鄄
which every vehicle have been e鄄
place. If still not bright, explain the
quipped.
index sign lamp bulb burn bad,
Checking and remedy of electri鄄
cal system
fuel gauge not move
Spread fuel-gauge and take it iron, if
the fuel -gauge needle point toward
fuel-gauge have already break down
or the instrument fuse was burn out,
should check to fix or replace. If the
66
1援Electrical parts trouble shooting
Trouble symptom and probable cause
Checking and remedy
(1)Not start
(a)Incorrect connection
(d) Clean the battery
(b)Barry output Incorrect connection
(b) Clean and tight it
(c)Lubricant is not the standard.
(c) replace lubricant
(d)Start the relay is incorrect.
(d) repair and replace
should replace, perhaps is launch
the engine oil road contain break鄄
down.
Dynamo is not work
Dynamo is work well, but indicator
light is not work.The main cause of
lamp connection is not well.
(2)Insufficient electric capacity
(a) New battery without circulation of charge and dis鄄 (a)Charge as specified
charge, or not been charged to rated quantity.
(b) Generator without charge or enough charge.
(b)Check connections and repair
(c) Damaged pole plate.
(c) Check and repair
(d) Low level or improper specific gravity of electrolyte
(d)Fill up electrolyte and charge battery with it separated
from vehicle
67
HFC1048
series trucks
2. Clutch trouble shooting
Trouble symptom and probable cause
Checking and remedy
渊3冤Too much waste of electrolyte
(a) High charging amperage. Elactrolyte vaporize or ov- 渊a冤Reduce the frequency of starting and shorten the start鄄
ing time .Decrease amperage of charging current
erflow
(b) Leak battery
渊4冤Self-discharge of battery
渊b冤Replace cover of the battery.
渊a冤Battery output cable short to ground
渊a冤Clean the output cable ,dispose the short
渊c冤Damaged or breakdown cell divider
渊c冤Check and repair
渊b冤A short circuit between pole plates
渊b冤Check and repair
渊d冤Dire external surface of battery case .Metal impurities (d) Clean the battery case .Tighten shield .Replace elec鄄
trolyte if necessary
mixed into electrolyte
68
Trouble symptom and probable cause
(1) Shaking clutch
a. Overloading too much vehicle
b. Not start in low gear
c. Defective release bearing or insufficient oil
d. Corrugated fin cracked, friction lining worn, loose rivet,
damper spring broken, or damper fin broken down.
(2) Clutch Slip
a. Thin friction lining, rivet reveal, or oil coat
b. Weak pressure of diaphragm spring
c. Too short free play of pedal
d. Vehicle loads too much
e. Not start in low gear
f. The pedal is hold pressed when running
Checking and remedy
a. Load by rated load
b. Start in first gear when loading much
c. Clean, lubricate or replace
d. Replace
a. Clean, or rivet a new friction lining
b. Replace
c. Adjust to 3~5mm
d. Load accord the rated load
e. Start in low gear
f. Change your bad driving habit
69
HFC1048
series trucks
3援Drive shaft trouble shooting
Trouble symptom and probable cause
(3) Clutch can't release completely
a. Too long free play of pedal
b. Wear or crack locking collar
c. Crack or distort of wave sheet
d. Broken damper spring
Checking and remedy
Trouble symptom and probable cause
Checking and remedy
(1) Noise or vibration of driveshaft
a. Adjust to 3~5mm
b. Replace
c. Replace
d. Replace
a. Worn universal joint
a. Change spider direction or replace universal joint as鄄
sembly
b. Bending of drive shaft
b. Align or replace
c. Loose couple flange or center bracket bolts
c. Retighten
d. Defective center bracket rubber sleeve
d. Replace
e. Insufficient lubrication
e. Fill up after cleaning
(4) Gears hard to mesh
a. High speed idle speed of engine
a. Adjust the idle speed
b. Improper meshing of clutch
b. Adjust clutch
c. Coherence of clutch plate
c. Repair or replace
d. Bend clutch slip sleeve
d. Replace
(2) Overheating center bracket
a. Too much tight of oil seal
crankshaft
c. Insufficient lubrication
70
a. It will disappear along with travel longer
b. Too bigger a inclination between drive shaft and b. Check and adjust the inclination
c. Fill up regularly
71
HFC1048
series trucks
4. Transmission trouble shooting
Trouble symptom and probable cause
Checking and remedy
(1) Gears break off
a. Worn or damaged coupling
a. Replace the coupling
b. Loosen nuts or bolts
b. Tighten
c. Improperly adjusted linkage
c. Readjust
d. Distorted, worn, or crack spring or locking ball
d. Repair or replace parts
e. Worn shift fork and groove face
e. Replace shift fork
f. Worn synchronizer hub and sleeve
f. Replace
g. Worn or damaged synchronizer hub and engagement g. Replace
sleeve
h. Worn or damaged bearing of input shaft and output h. Replace bearing
shaft
i. Worn or damaged thrust ring and thrust washer
i. Replace
j. Loosen bolts which mount transmission to engine
j. Tighten
72
Trouble symptom and probable cause
Checking and remedy
(2) Gears hard to mesh
a. High speed idle speed of engine
b. Improper meshing of clutch
c. Coherence of clutch plate
d. Bend clutch slip sleeve
a. Adjust the idle speed
b. Adjust clutch
c. Repair or replace
d. Replace
(3) Noise from transmission
a. Loosen bolts which mount transmission to engine
b. Worn gear or bearing
a. Tighten
b. Replace
(4) Hard to shift
a. Improper adjustment of shift knob
b. Worn hinge joint or pin
c. Worn control mechanism
d. Loosen bolts or nuts
a. Adjust shift knob
b. Replace
c. Replace
d. Check and tighten
73
HFC1048
series trucks
5尧Front axle trouble shooting
Trouble symptom and probable cause
Checking and remedy
Trouble symptom and probable cause
渊3冤Vibrate oscillate
(1) Hard steering, steering wheel doesn't return well
a. Insufficient lubrication of steering linkage mechanism
a. Apply lubrication on king pin and ball stud
b. Improper alignment of front wheel
b. Adjust
c. Improper toe in of front wheel
c. Adjust
d. Improper camber and caster of king pin
d. Check the linear for wear, and check knuckle and tie
a. Improper position fix of front wheel
Checking and remedy
a. Adjust, and replace if necessary
b. Worn king pin linear
b. Replace linear
c. Improper pretightening of hub bearing
c. Adjust
d. Worn hub bearing
d. Replace
e. Loosen ball stud of tie rod
e. Replace all end parts of tie rod
rod for deviation, replace if necessary
f. Loosen nuts on U-type bolt
f. Tighten
e. Worn thrust bearing
e. Replace
g. Loosen hub nuts
g. Tighten
f. Insufficient pressure of tire
f. Inflate properly
h. Distorted wheel
h. Replace
i. Unbalance wheel
i. Adjust and balance
j. Wheel deviation
j. Adjust
k. Asymmetry or insufficient inflation of tire
k. Adjust, inflate
(2) Abnormal worn tire
a. Improper position fix of front wheel
a. Adjust, and replace if necessary
b. Improper pressure of front tire
b. Adjust, and inflate
74
渊a冤front wheel location is wrong
渊b冤damage of the main bush
渊b冤replace
渊d冤damage of wheel hub axle
渊d冤replace
渊c冤the tight of wheel hub is wrong
渊c冤adjust
75
HFC1048
series trucks
6. Rear axle trouble shooting
Trouble symptom and probable cause
Checking and remedy
Trouble symptom and probable cause
Checking and remedy
(1) Abnormal noise from rear axle
渊e冤cross pull rod ball end is loosen
渊e冤change the parts
a. Worn or damaged pinion bearing
a. Replace bearing
b. Replace bearing
渊g冤the nut of wheel hub are loosen
渊f冤tighten
b. Worn or damaged side bearing of differential
渊g冤tighten
c. Loosen pinion bearing
c. Adjust preload
渊h冤replace
d. Loosen differential bearing
d. Adjust preload
渊i冤adjust the balance
e. Worn pinion and ring gear
e. Adjust tooth space
渊j冤adjust
f. Worn thrust washer
f. Replace
渊k冤adjust袁charge air
g. Worn differential spider
g. Replace
h. Worn pinion and ring gear
h. Replace
i. Worn or damaged side gear and planetary gear
i. Replace
j. Loosen tightening bolts of ring gear
j. Tighten
k. Improper contact between ring gear and pinion
k. Replace or adjust
l. Worn pinion spline
l. Replace
m. Worn rear half shaft spline
m. Replace
n. Loosen hub bearing
n. Replace
o. Worn hub bearing
o. Adjust bearing preload
渊f冤U type of nut and blot are loosen
渊h冤the distortion of wheel
渊i冤the wheel are not imbalance
渊j冤the wap of wheel
渊k冤shortage of the air pressure
渊4冤leak grease from wheel hub
渊a冤damage of oil seal
渊a冤replace
渊c冤too much grease
渊c冤use grease to fix
渊b冤hub cover is loosen
76
渊b冤tighten
77
HFC1048
series trucks
7. Steering mechanism trouble shooting
Trouble symptom and probable cause
p. Loose tightening bolts of differential case
q. Insufficient oil
r. Bad oil
Checking and remedy
p. Tighten
q. Fill up
r. Replace
(2) half shaft seal Leaking
a. Jammed rear axle vent hole
a. Fill up and readjust
b. Bad lubrication
b. Replace lubrication accord the season
c. Tight between pinion and driven gear, tight bearing, c. Readjust
and tight over on bearing
(3) Hot rear axle
a. Oil leak because of damaged seal gasket, loosen oil a. Fill up and readjust
drain plug, and jammed vent hole, result in insufficient lu鄄
brication
b. Bad lubrication
b. Replace lubrication accord the season
c. Tight over between pinion and driven gear, tight over c. Readjust
on bearing
78
Trouble symptom and probable cause
(1) Hard to steer and steering wheel with bad return
a. Distorted main shaft, sliding shaft or column
b. Loosen universal joint or column cover
c. Improper rotation of steering wheel bearing
d. Insufficient lubrication of steering linkage mechanism
e. Low pressure tire
Checking and remedy
a. Replace parts
b. Replace universal joint
c. Replace parts
d. Fill up lubrication
e. Inflate properly
(2) Shake of steering wheel, instable steering
a. Loosen steering linkage mechanism
a. Tighten properly
b. Unbalance front wheel
b. Balance the wheel
c. Pendulate too much
c. Adjust
d. Damaged grinding wheel
d. Replace
e. Heavy wear or too big clearance of steering linkage e. Replace parts
mechanism
79
HFC1048
series trucks
8. Running brake trouble shooting
Trouble symptom and probable cause
(3) Wander front wheel
a. One of front brake or damper is disabled
b. One of front tire low pressure
c. Disalign or break of front leaf spring
d. Damaged grinding wheel
e. Improper toe in of front wheel
(4) Power steering bump leaking
a. Damaged oil seal or O ring
b. Damaged oil seal locking nuts or oil-drain plug
(5) Heavy steering
a. Bad steering gear
b. Bad steering gear
c. Improper preload sector gear bearing
80
Checking and remedy
Trouble symptom and probable cause
(1)shortage of brake
a. Adjust the brake clearance or replace damper
b. Inflate tires
c. Check front spring assembly
d.Adjust or replace
e. Readjust
渊a冤adjust the brake room
渊a冤adjust the pull rod
渊c冤brake cam and shoe brake are rustiness
渊c冤clean the rustiness and grease
渊b冤have some dirty things
渊d冤brake room epithelia and pipe are leak air
渊e冤brake valve lead air
渊f冤the distance between brake and shoe plate is too large
a. Replace
b. Repair
渊g冤brake drum
渊h冤have dirty things on the pipe
渊i冤enter air to brake valve is slowly
渊2冤brake moment is partial
a. Replace piston set
b. Check pump for output pressure, replace if necessary
c. Adjust the pretightening force of bearing
Checking and remedy
渊b冤use buck to washing
渊d冤change epithelia ,check the air part
渊e冤change valve base
渊f冤adjust
渊g冤adjust and change
渊h冤clean it
渊i冤check enter air of the karat
渊a冤brake shoe plate unseemliness
渊a冤adjust
渊c冤shoe plate have oil dirt
渊c冤clean
渊b冤one side of brake shoe plate is rustiness
渊d冤the wheel is empty.
渊e冤brake drum is change
渊b冤grease
渊d冤ordain air press
渊e冤adjust and grind
81
HFC1048
series trucks
9. Parking brake failure shooting
10. Suspension trouble shooting
Trouble symptom and probable cause
a. Big clearance between brake pad and drum
Checking and remedy
a. Adjust the clearance until both its upper and lower is
0.65mm
b. Oil coat on brake pad or drum
b. Clean with water
c. Badly worn friction pad
c. Replace
Trouble symptom and probable cause
(1) Broken leaf spring
a. Load too much or partial to one wheel
a. Load properly as rated
b. Frequent emergency brake, drive too fast on uneven b. Keep your mind on driving, so that avoid emergency
road
brake and slower speed on uneven road
c. Loosen U-bolt. Loosen or broken spring clamp
c. Tighten U-bolt. Tighten or replace spring clamp.
d. Failed damper
d. Repair or replace
2) Noise in driving
(3) Bad absorption
a. Insufficient damping fluid
b. Having no maintaince regularly
c. Damaged rubber collar
82
Checking and remedy
Check and replace rubber suspension part
a. Fill up as rated
b. Maintain regularly
c. Replace
83
HFC1048
series trucks
喻尧Automotive model table of trucks
11. Wheel trouble shooting
Trouble symptom and probable cause
Checking and remedy
Engine
No.
(1) Badly worn tire
a. High or low tire pressure
a. Inflate by specification
b. Too much overloading or dissymmetrical loading
b. Load as rated
c. Loosen wheel hub bearing
c. Adjust
d. Improper toe-in of front wheel
d. Adjust the toe-in until it is 3~6mm (for diagonal tire)
and 1~3mm (for radial tire)
e. Frequent emergency brake, flare up when starting, or e. Drive stably, don't drive too fast
f. Transposition regularly
1
2
3
4
5
84
Engine type
power
(ml/kW)
accelerate suddenly
f. No wheel transposition
Vehicle type
HFC1048K
Inside dimension
of the cargo body
(l伊w伊h)
渊mm冤
Axle
Base
(mm)
5910伊2096伊2250
4130伊1960伊400
3308
type truck
YZ4102QF
HFC1048KR1
YZ4105QF
4087/75
CY4102BQ
3856/70.6
5910伊2096伊2250
3800伊1960伊400
3308
3856/88
5910伊2096伊2250
4130伊1960伊400
3308
5910伊2090伊2250
3800伊1960伊400
3308
5910伊2096伊2250
4130伊1960伊400
3308
type truck
3856/70.6
Outside dimension
(l伊w伊h)
(mm)
HFC1048K1
CY4102BZLQ
type truck
YZ4102ZLQ
HFC1048K1R1
CY4102BZLQ
3856/88
type truck
YZ4102ZLQ
3432/81
HFC1048KD
CY4102BZLQ
3856/88
type truck
CY4102BZQ
3856/88
3432/81
85
HFC1048
series trucks
Engine
No.
Vehicle type
Engine type
power
(ml/kW)
6
7
8
9
10
86
Outside dimension
(l伊w伊h)
(mm)
Inside dimension
of the cargo body
(l伊w伊h)
渊mm冤
Axle
Base
(mm)
No.
5910伊2090伊2250
3800伊1960伊400
3308
1
12/14
7.00-16
5910伊2096伊2250
4130伊1960伊400
3308
2
12/14
7.00-16
5910伊2090伊2250
3800伊1960伊400
3308
3
12/14
7.00-16
7.00-16
Umber of
leaf springs
HFC1048KR1D
CY4102BZLQ
3856/88
type truck
CY4102BZQ
3856/88
HFC1048K8
CY4102BZLQ
3856/88
type truck
YZ4102ZLQ
3432/81
HFC1048K8R1
CY4102BZLQ
3856/88
type truck
YZ4102ZLQ
3432/81
HFC4DA1-1
2771/68
5910伊2096伊2250
4130伊1960伊400
3308
4
12/14
HFC4DA1-1
2771/68
5910伊2096伊2250
3800伊1960伊400
3308
5
12/14
HFC1048K9
type truck
HFC1048K9R1
type truck
tyre
(front/rear)
Tread
Cross vehicle
Max load
Curb
Front/rear
(front/rear)
weight
capacity
wigh
suspension
(mm)
(kg)
(kg)
(kg)
(mm)
4480
1920
2560
23/14
1105/1497
4480
1920
2560
23/14
1105/1497
4480
1725
2560
23/14
1105/1497
4480
1725
2560
23/14
1105/1497
4480
1725
2560
23/14
1105/1497
1665/1525
1665/1485
1665/1525
1665/1485
1665/1525
1665/1485
1665/1525
1665/1485
7.00-16
1665/1525
7.50-16
1665/1485
87
HFC1048
series trucks
Umber of
No.
leaf springs
tyre
(front/rear)
Cross vehicle
Max load
Curb
Front/rear
(front/rear)
weight
capacity
wigh
suspension
(mm)
(kg)
(kg)
(kg)
(mm)
7.00-16
1665/1525
7.50-16
1665/1485
6
12/14
7
12/14
7.00-16
8
12/14
7.00-16
9
12/14
7.00-16
10
12/14
7.00-16
88
Tread
1665/1525
1665/1485
1665/1525
1665/1485
1665/1525
1665/1485
1665/1525
1665/1485
峪尧Appendix
Main lubricating position and the lubricant name(for reference)
Description of the oil in lubricating table (for reference)
4480
1725
2560
23/14
1105/1497
4480
1725
2560
23/14
1105/1497
4480
1725
2560
23/14
1105/1497
4365
1790
2380
1185/2050
4365
1785
2380
1185/2050
Main files along with the vehicle
89
HFC1048
series trucks
Table one Main lubricating position and the lubricant name(for reference)
No.
Lubricating position
Symbol of
maintenace cycle
Number of
the lubricant the ubricating
everyday
First
Seconde
Third
Every
time
time
time
season
1
universal joint of the driveshaft
G
3
2
spline of the driveshaft
G
1
fill
replace
3
battery terminal
G
2
fill
replace
4
transmission
Z
6L渊reference冤
fill
Y
suitable
Z
1
G
各2
5
6
7
8
90
oil cup of the clutch brake
master cylinder
steering gear
steering knuckle pin and ball pin
of the drag link and the tie rod
Filer cartride
1
No.
replace
replace
one change one year
fill
check
replace
fill
replace
replace
replace
Lubricating position
Symbol of
maintenace cycle
Number of
the lubricant the ubricating
everyday
First
Seconde
Third
Every
time
time
time
season
fill
replace
replace
9
generator
G
2
10
Power steering
D
1
11
bearing of the front尧rear hub
ZL
Each 2
replace
12
Shack absorber
Q
2
fill
13
Water pump bearing
G
1
G
1
Z
1
14
Transimission drive
gear front bearing
15
Rear axle
16
Engine lubrication system
17
Cooling system
drive mechanism
1
ZL
2
fill
fill
fill
replace
fill
fill
replace
replace
replace
fill
91
HFC1048
series trucks
Table two Description of the oil in lubricating table (for reference)
Symbol in the
Lubricant
table
Number
Name
Tightening torque渊N窑m冤
1
Nuts of steering tie rod ball pin
186依20渊19依2冤
2
Nuts connected the transmission and the clutch housing
68.8-93.2渊7-9.5冤
3
Intermediate driveshaft flange nuts
343-539渊35-55冤
4
tyer nut
196-245渊20-25冤
5
Diving gear flange nuts
220-250渊23-25.5冤
6
Fixing nuts of the steering straight arm
441依49渊45依5冤
B
L-BCD4 oil GB11123渊summer冤袁LECD30 oil GB11123渊winter冤
J
15W/20 or 15W/40 thickened oil
G
GB49 2# lime base grease
ZL
GB5671 universal lithium base grease
7
U-bolt of the front leaf spring
250
Q
Half HU-20 gasoline engine oil渊GB2537冤and half 45# transformer oil 渊GB2536冤
8
U-bolt of the rear leaf spring
350
9
steering fix bolt
68.8-88.2渊7-9冤
Y
brake fluid JG3渊GB10830冤
10
Fixing nuts of steering flexural arm
441依49渊45依5冤
Z
medium-load vehicle gear oil渊GL-4冤 85W/90
11
Steering-wheel fix nut
49-78.4渊5-8冤
12
Transmission flange nuts
>166.7渊17冤
13
Pitman arm shaft nut
196-235.2渊20-24冤
D
92
Table three Tightening torque of main fastening pieces (for reference)
L-HM46(GB11119), the below zero is L-LM32(GB11119) antiwear hydraulic oil.
93
HFC1048
series trucks
Main files along with the vehicle
1尧叶Operating specification of HFC1040 series trucks曳
2尧叶Operating specification of engine曳
3尧Products certification
The nameplate of JAC series trucks is located on the right side of longitudinal member beside front suspension.
ANHUI JIANGHUAI AUTOMOBILE CO., LTD.
Address院176# Dongliu Road Hefei City
Telephone院0551-2296374
Postalcode院230022
Network address院http://www.jac.com.cn
94
95